Landscaping
Commercial landscape maintenance program field guide
Run the property on a calendar, not on complaints: the recurring scope, mowing by the one-third rule, the feed and weed program, the seasonal work, and the record that holds the contract.
Direct answer
A commercial landscape maintenance program is a recurring scope of work, mowing, edging, beds, pruning, fertilization, and irrigation, run on a calendar instead of on call. The schedule keeps the property healthy and the contract profitable. Local cooperative extension turf guidance, the herbicide label, and the contract specification govern the rates and timing.
Key takeaways
- One-third rule: never cut more than a third of the grass blade in a single mow, or the turf scalps, roots shrink, and weeds move in.
- Apply pre-emergent before weed seed germinates, triggered by 2 in soil temp climbing through about 50 to 55F, not by a calendar date.
- Cool-season turf gets its heaviest feeding in fall; build rates on a soil test, roughly 2 to 4 lb actual nitrogen per 1000 sq ft per year.
- Keep mulch in a flat 2 to 4 in ring pulled back off the trunk so the root flare stays visible; never pile a volcano against bark.
- The herbicide label is the law and applying chemicals for hire requires a state pesticide applicator license; the contract spec governs scope, height, and frequency.
What a maintenance program is, and why the schedule beats reacting
A commercial landscape maintenance program is the recurring scope of work that keeps a property looking right week after week: mowing, edging, bed care, pruning, feeding, and irrigation, all on a calendar somebody set on purpose. The work does not change much month to month. What changes is whether it actually happens on schedule or only when the property manager calls to complain.
The difference between a program and a service call is the calendar. A program puts the right task on the right week before the property needs it, so the turf never gets ahead of you and the beds never go to weeds. React instead of schedule and you spend the season catching up, mowing wet overgrown grass, pulling weeds that already seeded, and explaining why the place looks rough. The reactive crew works harder and the property still looks worse.
The property is your resume. Every prospect who drives past a site you maintain is reading your work, and the contract renews or walks on what they see from the road. A thin, weedy, scalped lawn loses the next bid for you before you ever quote it. Bringing a tired property back is the subject of the turf renovation guide. This guide is about the program that keeps it from needing renovation in the first place.
What is included in a commercial landscape maintenance contract?
A commercial maintenance contract is a list of recurring tasks, each with a frequency, split between the base fee and the extras billed on top. The base is the routine that happens every visit or on a set interval. The enhancements are the work that recurs less often or costs enough to price separately. Getting that split written down is what keeps the job profitable and the client from arguing in July.
The line items below are the standard scope. Most of them, mowing through irrigation checks, sit in the base fee. Seasonal color, mulch, aeration, and major pruning usually run as enhancements because the material and labor recur on their own cycle. Snow and ice is almost always its own agreement. The table shows where each task typically lands, but the contract specification is what actually decides it for your property.
| Task | Typical frequency | Base or enhancement |
|---|---|---|
| Mowing | Weekly in growth, less in dormancy | Base |
| Edging and string trimming | Each mow visit | Base |
| Blowing and cleanup | Each visit | Base |
| Bed weeding | Each visit or biweekly | Base |
| Shrub pruning | Seasonal, per plant | Base (major work is enhancement) |
| Fertilization | Per program, seasonal | Base or enhancement per contract |
| Weed control (pre and post) | Spring and fall windows | Base or enhancement |
| Irrigation check | Monthly plus seasonal | Base |
| Mulch refresh | Annual | Usually enhancement |
| Seasonal color | 2 to 4 rotations | Enhancement |
| Aeration and overseed | Annual | Usually enhancement |
| Leaf removal | Fall, multiple passes | Base or seasonal add |
| Snow and ice | Per storm | Separate contract |
Mowing: the one-third rule, height, and a sharp blade
Mowing is the most visible task on the property and the one most often done wrong. The rule that governs all of it is the one-third rule: never cut more than a third of the grass blade in a single mow. Take the lawn from 3 in down to 2 in, not down to 1 in. Scalp off more than a third and you shock the plant. It stops feeding itself while it rebuilds leaf, the roots shrink to match, and the thin, stressed turf opens the door to weeds and drought. The one-third rule is long established in turf science, and every cooperative extension turf program repeats it for the same reason.
Cut at the right height for the grass and the season. Cool-season grasses like tall fescue and bluegrass hold at roughly 3 to 4 in, taller in summer heat to shade the soil and keep moisture in. Warm-season grasses like bermuda run much lower. The height table is a starting range; the species on the property and the local extension recommendation set the actual number.
Sharp blades, every time. A dull blade tears the leaf instead of cutting it, leaving a frayed, white-gray tip that browns out and lets disease in. You see it as a whitish cast over the lawn the day after mowing. Sharpen or swap blades on a schedule, not when someone finally notices the tearing.
Alternate the mowing pattern between visits. Mow the same direction every week and the grass leans that way while the wheels rut the same lines and compact the soil. Change direction and the turf stands up and wears evenly. On healthy turf, leave the clippings: they break down fast and return nitrogen, which is free fertilizer, as long as you held the one-third rule so the clippings are short. Bag only when the grass got too long and the clumps would smother what is under them.
| Grass type | Common mowing height | Notes |
|---|---|---|
| Tall fescue (cool-season) | ~3 to 4 in | Raise toward 4 in in summer heat |
| Kentucky bluegrass (cool-season) | ~2.5 to 3.5 in | Higher in heat and shade |
| Perennial ryegrass (cool-season) | ~2 to 3 in | Often in fescue and blue blends |
| Bermuda (warm-season) | ~0.5 to 1.5 in | Reel mower for the lowest heights |
| Zoysia (warm-season) | ~1 to 2 in | Slow to recover from scalping |
| St. Augustine (warm-season) | ~2.5 to 4 in | Does not tolerate low mowing |
How often should a commercial property be mowed?
The mowing frequency that holds a property is whatever keeps you inside the one-third rule, which means it shifts with the growing season instead of a fixed day on the calendar. In peak growth that is usually weekly. Many commercial cool-season properties run weekly through spring and fall and stretch to every 10 to 14 days in summer heat or dormancy. Warm-season turf in full summer can need more than weekly.
The mistake is the rigid every-Friday schedule that ignores how fast the grass is actually growing. In a wet spring the grass outruns a weekly cut and you break the one-third rule every visit. In a dry August it barely grows and you are mowing dust and stressing it for nothing. Watch the growth, not the calendar square. The contract sets a base frequency, and good crews flex the interval inside it to match what the turf is doing.
Edging, trimming, and the trunk-girdling caution
Edging and string trimming are what separate a maintained property from a mowed one. A crisp edge along every walk, curb, and bed line reads as care from the road even when the rest of the work is ordinary. Run a stick edger along hardscape for the clean vertical cut. The string trimmer handles tree rings, fence lines, and the spots the mower cannot reach.
The trimmer is also how crews kill trees without knowing it. Run the string against a young trunk to knock down the grass at the base and it strips the bark. Hit the same trunk a few weeks running and you girdle it: the string removes a ring of bark all the way around, which cuts the tree's circulation, and the tree dies slowly over the next season while everyone blames something else. Damage that wraps all the way around the trunk, a full girdle, is what kills it by cutting off the flow under the bark, and on a young tree it can take only two or three hits to complete that ring.
The fix is not better trimming technique. It is a mulch ring around every trunk so there is no grass to trim against, and hand-pulling anything that grows inside it. Keep the string away from bark, period.
Blowing and cleanup
Blowing is the last 10 minutes that makes the first 90 look professional. Clear every clipping off the walks, the curb, the lot, and the entry, and blow the beds clean of debris before you leave. A property mowed perfectly and left with grass scattered across the sidewalk reads as a sloppy job, because the part the client sees on the way in is the mess, not the stripes.
Blow toward the turf, not the storm drain. Clippings and debris washed into storm inlets are a water-quality problem and in many places a violation. The finished look is the deliverable, and cleanup is where crews rushing to the next stop cut the corner the client notices first.
Bed maintenance, weeding, and the mulch refresh
Bed maintenance is weeding, edging the bed line, and keeping the mulch layer right, and it is where a property either looks tended or looks abandoned. Weeds in the beds are the fastest signal that nobody is paying attention. Pull or spot-treat them before they flower and seed, because one weed allowed to seed is a hundred next month.
Mulch does real work beyond looks. It holds soil moisture, moderates soil temperature, and smothers weed seed before it germinates. Refresh it to keep a 2 to 4 in layer, no deeper. Piling new mulch on old every year until it sits 6 in deep does more harm than good, holding water against stems and starving the soil of oxygen. The how and why of mulch depth is in the mulching guide by topic. On a maintenance program the rule is simple: top up to 2 to 4 in, do not bury. Pre-emergent in the beds cuts the weeding load for months, which is the next section.
When should you apply pre-emergent weed control?
Pre-emergent herbicide goes down before the weed seed germinates, not after you can see the weed, because it works by stopping germination and does nothing to a weed already up. For summer annuals like crabgrass, that means the early-spring window when soil temperature at the 2 in depth is climbing through roughly 50 to 55°F, before it reaches the 60 to 70°F range where crabgrass germinates. Miss that window by two weeks and the barrier goes down behind the weed.
Soil temperature, not the date, is the trigger, and it shifts north to south and year to year, so watch local soil-temperature data or your cooperative extension's regional alert instead of marking a calendar day. Many programs run a split application: a spring pre-emergent for crabgrass and a fall one for winter annuals as soil temps drop back through 70°F. Post-emergent herbicide handles the weeds that slip through, spot-sprayed, not blanket-sprayed.
Anyone applying these chemicals for hire needs the state pesticide applicator license, and the herbicide label is the law. The rate, the timing, and the site listed on the label are legally binding, not suggestions.
Pruning on a schedule, not shearing everything
Pruning on a maintenance program means cutting the right plant at the right time for a reason, not shearing everything into green meatballs because the crew has hedge trimmers running. Most shrubs have a window. Spring-flowering shrubs like azalea and forsythia set their buds the previous year, so you prune them right after they bloom or you cut off next year's flowers. Summer-flowering shrubs bloom on new growth and take a late-winter or early-spring cut.
The default failure is shearing. Running power shears over every shrub every visit builds a dense outer shell of growth that shades out the interior, so the plant goes thin and woody inside and you get a hollow shrub with a thin green skin. Selective hand pruning, thinning cuts that open the plant and take out the oldest wood, keeps shrubs healthy and the right size for years.
Trees are their own discipline and their own timing. Structural and large pruning is covered in the tree pruning guide by topic. On the program, prune to the plant's biology and the season, and keep the shears off anything that is not actually a formal hedge.
When should you fertilize a lawn?
Fertilize a lawn when the grass is actively growing and can use the nitrogen, which depends entirely on whether it is cool-season or warm-season turf. Cool-season grasses like fescue and bluegrass do most of their growing in spring and fall, and fall is the most important feeding of the year, building roots and density going into winter. Warm-season grasses like bermuda grow in the heat, so they get fed through late spring and summer and are never pushed hard going into dormancy.
Build the program on a soil test, not a guess. The test gives you pH and what the soil is short on, so you are not dumping nitrogen the lawn cannot use or skipping the lime it needs. Use slow-release nitrogen for the bulk of it, which feeds steadily over weeks instead of a surge that burns and then fades. Cool-season turf commonly runs roughly 2 to 4 lb of actual nitrogen per 1000 sq ft per year, split across applications, but the rate and the split come from the soil test and the local extension program for your grass and region.
Spoon-feed light and often rather than dumping a heavy application, which burns the turf and runs off into the storm drain. The table is a typical seasonal split. Treat it as a starting frame, not a prescription.
| Season | Cool-season turf | Warm-season turf |
|---|---|---|
| Early spring | Light feed as green-up starts | Hold until soil warms |
| Late spring | Light, do not push into summer | Begin feeding as growth starts |
| Summer | Spoon-feed light or skip in heat | Main feeding season |
| Early fall | Heaviest feeding of the year | Taper off before dormancy |
| Late fall | Optional late feed for roots | None, going dormant |
Irrigation management through the season
Irrigation management on a maintenance program is the monthly walk-through of the system plus the seasonal adjustments most crews never make. Once a month, run each zone and watch it: catch the broken head spraying the sidewalk, the clogged nozzle leaving a dry arc, the head buried by turf, the leak surfacing as a wet spot. A zone nobody watches run wastes water for months and browns out the spot it stopped covering.
The seasonal work is the part that matters most. Spring start-up means charging the system slowly, checking every zone, and setting run times for the season. Through the year those run times have to come down in spring and fall and up in midsummer as plant demand and evapotranspiration change. The set-and-forget controller running July times in October is the single most common waste in the trade.
In freezing climates the system gets winterized in fall, usually a compressed-air blow-out to clear water from the lines so it cannot freeze, expand, and crack the pipe, valves, and backflow. Programming the controller from the precipitation rate and riding the seasonal adjust is its own job, covered in the irrigation controller programming guide. On the maintenance side, the deliverable is that the system runs right and gets adjusted when the season turns.
Aeration and overseeding on the calendar
Aeration and overseeding belong on the maintenance calendar, not in the renovation emergency that happens when nobody scheduled them. Compacted soil is the slow killer of commercial turf, especially anywhere with foot traffic or mowing equipment running the same lines. Core aeration once a year, pulling plugs to open the soil, relieves that compaction and lets water, air, and nutrients reach the roots.
For cool-season turf, the move is core aeration paired with overseeding in early fall, when the soil is warm and the seed has the fall and the following spring to establish before summer stress. That one annual pass keeps the stand thick enough to crowd out weeds, which cuts the herbicide and the bare-spot complaints all year. Time it with a fertilization, drop the pre-emergent that would kill the new seed, because the two conflict directly, and you have one efficient visit that carries the turf.
The full method, plug depth, seed rates, topdressing, and the pre-emergent conflict, is in the turf renovation guide. On the program, the point is that it is scheduled every year, before the lawn thins, not after.
The seasonal calendar
The year runs in a predictable cycle, and the program is just that cycle written down so nothing gets missed. Spring is cleanup, the first mows, pre-emergent, mulch, and irrigation start-up. Summer is mowing and watering at the height of growth and heat, scouting for pests, and holding the turf through stress. Fall is the heavy season for cool-season turf: aeration, overseeding, the most important fertilization, and the start of leaf cleanup. Winter is dormant pruning, leaf finish, and in cold climates snow and ice.
The exact weeks shift with the region and the weather, so the calendar is a frame, not a fixed date list. Build it around the local growing season and the soil temperatures, and let the season's actual conditions move the lines. The table is a temperate cool-season frame; warm-season regions push the heavy growth and feeding into summer.
| Season | Primary tasks |
|---|---|
| Spring | Cleanup, first mows, pre-emergent, mulch, irrigation start-up |
| Summer | Mowing and watering at peak, IPM scouting, seasonal color |
| Fall | Aeration, overseed, heavy fertilization, leaf cleanup, fall pre-emergent |
| Winter | Dormant pruning, leaf finish, snow and ice |
Pest and disease scouting (IPM)
Integrated pest management is catching turf and plant problems early enough to fix them small, instead of spraying the whole property after the damage shows. The core of it is scouting: walking the property regularly and looking, systematically, for the early signs of insects, disease, or stress before they blow up. A grub problem caught as a small soft spot in August is a spot treatment. The same problem found in October is a dead patch and a renovation.
IPM is a decision process, not a spray schedule. You scout, you identify what you actually have, you weigh whether it is past the threshold where it does real damage, and only then do you treat, with the least-disruptive control that works. A lot of what looks like a pest is really a cultural problem, mowing too low, watering wrong, compacted soil, and the fix is the practice, not a chemical. Treating before you know what you have wastes product and breeds resistance. Scout first, identify, then decide.
Seasonal color and annual rotations
Seasonal color is the annual flower rotation at the entries, signs, and high-visibility beds, and it is the enhancement clients see and remember. Most programs run two to four rotations a year, swapping the planting as each set fades and the season turns: cool-season annuals like pansies for fall and winter, warm-season annuals for spring and summer. The beds get refreshed soil and feeding at each changeout, because annuals are heavy feeders pushed to bloom hard for one season.
Color is almost always a separate line item, not base scope, because the plant material and the labor recur several times a year. It is also the highest-impact dollar on the property for what the client notices. A sharp color rotation at the front entrance covers for a lot, and a tired, half-dead annual bed undercuts an otherwise clean property.
Tree and shrub care, and the mulch volcano
Tree and shrub care on the program is health monitoring, light pruning, mulch, and staking, the maintenance that keeps the woody plants alive between any major work. Watch for dead and broken limbs, girdling stakes left on too long, and stress that shows as early color or a thin canopy. Stakes are temporary. A tree staked at planting needs the stakes and ties off within a year or so, because a tree left tied builds a weak trunk and the ties cut into the bark as it grows.
The mulch volcano is the most common and most damaging mistake in this trade. Mulch piled up against the trunk in a cone, year after year, holds moisture against the bark and buries the root flare, which rots the bark, invites disease and rodents, and grows girdling roots that choke the tree. Mulch goes in a flat ring, 2 to 4 in deep, pulled back a few inches off the trunk so the root flare shows, never piled against it. If you cannot see where the trunk meets the ground, the mulch is wrong. Pull it back.
Leaf removal, snow, and ice
Leaf removal and snow are the off-season scope that keeps the crew working and the property safe when the grass stops growing. Leaves left on turf through winter mat down, block light, hold moisture, and smother the grass into dead patches by spring, so fall leaf cleanup is real turf protection, not just tidiness. On most commercial sites it runs several passes through the fall as the leaves drop, not one cleanup at the end.
Snow and ice are a different contract and a different liability. A property under a snow contract has to be cleared and treated to keep the walks and lots safe, and a slip-and-fall on an untreated walk is a lawsuit with the contractor's name on it. The work is timed to the storm, often overnight and on call, and it lives on documentation: what got plowed and salted, and when, is the record that defends the contractor when the claim comes. Snow is usually a separate agreement from the growing-season maintenance, priced per push or per season.
Base scope, enhancements, and the walkthrough
A commercial maintenance contract splits into base scope and enhancements, and getting that line clear at the start is what keeps the job profitable and the client happy. Base scope is the recurring work priced into the monthly or seasonal fee: mowing, edging, blowing, bed weeding, the scheduled pruning, and usually irrigation checks. Enhancements are the extras billed on top: seasonal color, mulch installation, major pruning, irrigation repairs, aeration and overseed, plant replacement, and anything outside the routine.
The fights happen where that line is fuzzy. The client thinks the dead shrub gets replaced under the monthly fee; the contractor priced replacement as an enhancement. Spell it out in the scope so there is no argument in July.
Walk the property with the client before the season and at intervals through it, so expectations are set against what the site actually is, not what either side imagined. The walkthrough is also where you sell the enhancements the property needs, by showing the client the problem on the ground instead of in an email.
Quality and the client relationship
The client relationship runs on the walkthrough and the communication around it, not on the mowing alone. The property manager rarely measures your work with a ruler. They judge it by how it looks from the road, whether the complaints from their tenants stop, and whether you tell them about a problem before they find it. A contractor who walks the site monthly with the manager, flags the irrigation break before it browns the lawn, and shows up when promised keeps the contract through a higher bid from someone else.
The property reflects on the client too, which is an angle most crews never use. The manager's boss, the tenants, and the owner all see the landscape, and a sharp property makes the manager look good. Frame the enhancements that way: the mulch, the color, and the healthy turf are the manager's win as much as yours. Communicate the problems early and in plain terms, document what you did, and the relationship survives the seasons where the weather makes the property look rough through no fault of the work.
Crew routing, equipment, and time per property
Crew efficiency is routing, equipment, and time per property, and it is where the contract's margin lives or dies. The route is the order of the stops and the drive time between them. A route that crosses the city twice burns the day in the truck instead of on the turf. Cluster the properties geographically, sequence them to cut backtracking, and the same crew services more sites in a day.
Time per property is the number the bid was built on, and the crew either hits it or the job loses money quietly all season. Match the equipment to the site: a large open commercial lawn wants a wide ride-on mower, a tight courtyard wants a walk-behind, and sending the wrong machine wastes the visit. Keep the equipment sharp and serviced, because a mower down or a dull blade slows every stop after it.
The fastest crew is not the one that rushes the work. It is the one that does not waste the day driving, fixing breakdowns, or redoing a stop the route should have handled once.
Safety on the maintenance crew
Landscape maintenance puts crews around spinning blades, string trimmers throwing debris, chemicals, heat, and traffic, and the injuries are routine enough that the safety has to be routine too. Mowers throw rocks and amputate. Keep the deck guards on, never clear a clog with the blade engaged, and keep people clear of the discharge. String trimmers throw debris into eyes and faces, so eye and face protection is not optional on the trimmer. Hearing protection goes with both, all day.
Chemicals carry their own rules. The herbicide and pesticide labels specify the protective equipment, and the applicator license requires you to follow it. Heat is the quiet hazard, because crews working full sun all summer get heat illness, and the answer is water, shade breaks, and watching each other for the early signs. On roadside and parking-lot work, traffic is the one that kills, so high-visibility vests, cones, and a spotter on the busy edges. The crew that treats the PPE as optional is the crew that has the injury that shuts the job down.
The service record and proving the visits
The service record is the proof the visits happened, and on a recurring contract it is what protects the contractor and renews the work. A maintenance program is invisible when it is done right. The property just looks good, and the client forgets how much work that takes until they stop paying for it. The record is what answers the manager who asks what they are paying for, and it is the defense when a claim says the crew never showed.
Log each visit: the date, the crew, what was done, and anything flagged for follow-up, with photos of the completed work and of any problem found. Recurring scheduling and a per-visit service log are exactly what a field tool like FieldOS is built for, so the route, the visit record, and the photos live in one place instead of a notebook in the truck. The record also drives the enhancement sales, because a photo of the failing irrigation zone or the declining tree sells the repair far better than a description. Prove the visit, flag the problem, keep the photo. That is the paper that holds the contract.
High-visibility campus and data-center programs
High-visibility landscapes, corporate campuses, headquarters entrances, and data-center sites, run a tighter program than a strip mall because the property is the company's face and the standard is set accordingly. The mowing is more frequent and the edges sharper, the color rotations more elaborate, the turf held to a higher density, and the tolerance for a weed or a dead plant much lower. The contract usually carries the enhancement budget to match.
These sites also bring access and security constraints a typical property does not. A secured data-center perimeter means scheduled access, escorts, and crews cleared in advance, and the maintenance has to work around uptime and security rather than the crew's convenience. The landscape standard tends to be uncompromising, because the site represents a company whose whole business is reliability, and a neglected entrance reads as neglect everywhere. Staff these accounts with the crew that hits the standard every visit, document tightly, and treat the higher frequency and the access rules as the cost of a premium contract.
What to document
Write down what you did and what you found, every visit, because the record is the contract's memory. The table is the recurring service record a commercial program should capture, task by task.
| Task | Frequency | Season | Notes |
|---|---|---|---|
| Mowing and height | Each visit | All growing season | Height set, one-third rule held |
| Fertilization | Per application | Spring/summer/fall by turf | Product, rate, N per 1000 sq ft |
| Pre-emergent | Each application | Spring and fall windows | Product, rate, soil temp, license |
| Irrigation check | Monthly | All season | Zones run, breaks found, run times set |
| Aeration and overseed | Annual | Early fall (cool-season) | Seed rate, no conflicting pre-emergent |
| Pruning | Per event | Per plant window | What was cut and why |
| Pest and disease scouting | Each visit | All season | What was found, threshold, action |
| Issues flagged | Each visit | All season | Photo, location, recommended enhancement |
Common mistakes
- Mowing too low or breaking the one-third rule, which scalps and thins the turf.
- Running dull mower blades that tear the leaf and leave the lawn a gray cast.
- Letting the string trimmer girdle tree trunks instead of mulching a ring around them.
- Skipping the soil test and dumping nitrogen the lawn cannot use, or burning it with one heavy application.
- Missing the pre-emergent window by watching the calendar instead of the soil temperature.
- Running set-and-forget irrigation that never gets seasonally adjusted, watering July times in October.
- Piling mulch into volcanoes against tree trunks instead of a flat 2 to 4 in ring pulled off the flare.
- Shearing every shrub into a hollow shell instead of selective hand pruning at the right time.
- Not documenting the visits, so there is no proof the work happened when the client or a claim asks.
Field checklist
Want this checklist to run itself on every job — with photo proof and a signed record crews can hand the customer? That's FieldOS.
Standards and references
This work is craft and management more than code, but the numbers behind it come from real turf science and a few legal lines you do not cross. The mowing heights, fertilization rates, pre-emergent timing, and overseeding windows in this guide are starting ranges. The authority for your property is your state cooperative extension turf program, which publishes recommendations tuned to the grasses and climate where you work. Use the extension number over a national rule of thumb every time.
The herbicide and pesticide labels are the law, not a guideline. Federal pesticide law makes it a violation to apply a product off-label, so the rate, the timing, the site, and the protective equipment on the label are binding, and applying these chemicals for hire requires a state pesticide applicator license. The contract specification is the other governing document. Where it sets a frequency, a height, or a scope, it controls over any general practice in this guide.
Industry groups like the National Association of Landscape Professionals publish best-practice and safety guidance worth following, but they do not override the label, the license law, or the contract.
Units, terms, and conversions
The trade has its own shorthand, and the same idea shows up worded differently across a spec, a fertilizer bag, and an extension sheet.
Fertilizer is measured in pounds of actual nitrogen per 1000 sq ft, which is the number that matters, not the bag weight, because the bag is mostly carrier. Mowing height is in inches, set at the deck. Soil temperature for pre-emergent timing is read at the 2 in depth. The terms below are the ones that carry the program.
- One-third rule
- Never remove more than a third of the grass blade height in a single mow
- Cool-season grass
- Grasses that grow most in spring and fall, such as fescue, bluegrass, and ryegrass
- Warm-season grass
- Grasses that grow in the heat, such as bermuda, zoysia, and St. Augustine
- Pre-emergent
- Herbicide that stops weed seed from germinating, applied before the weed appears
- Post-emergent
- Herbicide that kills weeds already growing, usually spot-applied
- IPM
- Integrated pest management: scout, identify, weigh the threshold, then treat
- Core aeration
- Pulling soil plugs to relieve compaction and open the soil to water and air
- Spoon-feeding
- Light, frequent fertilizer applications instead of one heavy dump
- N per 1000 sq ft
- Pounds of actual nitrogen per thousand square feet, the turf fertilizer unit
- Root flare
- Where the trunk widens into the roots, which must stay visible above the mulch
- Base scope vs enhancement
- Recurring work in the fee versus extras billed on top
FAQ
What is included in a commercial landscape maintenance contract?
A commercial maintenance contract usually includes mowing, edging, blowing, bed weeding, scheduled pruning, and irrigation checks as base scope. Seasonal color, mulch, aeration, fertilization, major pruning, and plant replacement are often enhancements billed on top. Snow and ice is typically a separate agreement. The contract spec defines the exact line between base and extra.
What is the one-third mowing rule?
The one-third rule says never cut more than a third of the grass blade in a single mow. Take a 3 in lawn down to 2 in, not lower. Removing more scalps the turf, shrinks the roots, and stresses the plant so weeds and drought move in. It traces to USDA turf research, and every extension program repeats it.
How often should a commercial property be mowed?
Mow as often as it takes to stay inside the one-third rule, which changes with the season. Most cool-season commercial turf runs weekly in spring and fall and stretches to every 10 to 14 days in summer heat. Warm-season turf can need more than weekly in peak growth. Watch the grass, not a fixed calendar day.
When should you fertilize a lawn?
Fertilize when the grass is actively growing. Cool-season grasses get their heaviest feeding in fall, with lighter spring applications. Warm-season grasses are fed through late spring and summer. Build the rate on a soil test, use slow-release nitrogen, and follow your local extension program. Spoon-feed light rather than dumping a heavy application that burns.
Why is mulch piled against a tree trunk a problem?
Mulch piled in a volcano against the trunk holds moisture against the bark and buries the root flare, which rots the bark, invites disease and rodents, and grows girdling roots that choke the tree. Keep mulch in a flat 2 to 4 in ring pulled back off the trunk so the root flare stays visible.
When should you apply pre-emergent weed control?
Apply pre-emergent before the weed seed germinates, triggered by soil temperature, not the date. For crabgrass, go down as 2 in soil temps climb through about 50 to 55°F, before they reach the 60 to 70°F germination range. Many programs split a spring and a fall application. The label and the applicator license apply.
What is the difference between base scope and enhancements?
Base scope is the recurring work in the monthly fee: mowing, edging, blowing, weeding, scheduled pruning, and irrigation checks. Enhancements are extras billed separately: seasonal color, mulch, aeration, major pruning, irrigation repair, and plant replacement. Spell out the line in the contract so a dead shrub or a mulch refresh is not an argument in July.
Can a string trimmer really kill a tree?
Yes. Running the trimmer string against a young trunk strips the bark, and hitting it repeatedly girdles the tree by removing a ring of bark all the way around, which cuts its circulation. Damage past about a quarter of the trunk circumference is often fatal. Mulch a ring around every trunk so there is no grass to trim against.
Why document a recurring maintenance visit?
A maintenance program is invisible when done right, so the service record is the proof the work happened. Log the date, crew, what was done, and any problem found, with photos. It answers the client asking what they pay for, defends against a claim the crew never showed, and sells the enhancements the property needs.