Trimming & Edging

Lawn · lawn

Trimming and edging are the difference between a mowed lawn and a finished property. Get these right and the whole job looks sharp. Get them wrong — scalped rings around trees, ragged edges, bark damage — and nothing else you did matters.

The handheld fleet covers two power systems: DeWalt cordless (battery) and mixed-gas 2-cycle. Both have their place — see the equipment overview below for which to grab when. Full specs and troubleshooting for each tool are on the individual equipment profile pages (accessible from the sidebar under Lawn).

Equipment Overview — Handheld Fleet

Five handheld tools carry the trimming, edging, and blowing work. Two run on DeWalt batteries; three run on PREMIUM 91+ at 50:1 (see individual profiles for the full mix rule — do not improvise).

For full specs, battery platform details, run-time numbers, and per-tool troubleshooting, open the individual profile pages via the sidebar or the Equipment Overview page. This section is the field-pick guide for what to grab off the truck.

Handheld Tools — Field Selector

ToolPowerBest ForKey Notes
DeWalt 60V MAX string trimmerBattery (FlexVolt 60V)Fenced backyards, quiet-hours/HOA properties, small-to-mid residential, anywhere a gas trimmer is unwelcomeCarry one charged spare 12.0 Ah pack per job. Variable trigger — feather it for line conservation. Cold weather cuts run time. Full specs: /lawn/dewalt-60v-trimmer
DeWalt 20V MAX leaf blowerBattery (20V MAX)Hardscape blow-off after small jobs, walkway/patio detail, indoor-adjacent work where exhaust isn't OKLighter-duty than the backpack. Not enough air for fall leaf cleanup volume — use the Troy-Bilt backpack for that. Full specs: /lawn/dewalt-20v-blower
Stihl string trimmerMixed gas 50:1 (PREMIUM 91+)Heavy commercial, tall growth, all-day work, anywhere battery run-time isn't enoughCompany standard: 0.095-inch line only. Confirm fuel cap label says "MIX 50:1 — PREMIUM" before fueling. Full specs: /lawn/stihl-trimmer
Brush-cutter trimmer (metal blade)Mixed gas 50:1 (PREMIUM 91+)Brush, saplings up to blade rating, dense weed mats, fence-line clearing — work the string head can't handleBlade-rated shield REQUIRED — never run a string-head shield with the blade installed. Read the brush-cutter profile before first use: /lawn/brush-cutter
Yard Machines walk-behind string trimmerRegular gasoline (4-stroke, no mix)Tall grass, rough fence lines, large overgrown areas — wider swath than any handheldCheck engine oil dipstick before EVERY use — 4-stroke engines seize without oil. Full specs: /lawn/yard-machines-walk-behind-trimmer
Troy-Bilt backpack leaf blowerMixed gas 50:1 (PREMIUM 91+)Fall cleanup, large lots, parking lots, anything with real leaf volumeAdjust harness so weight rides on hips, not shoulders. Hearing protection required — louder than the handhelds. Full specs: /lawn/troybuilt-backpack

Battery vs. Mixed-Gas — When to Grab Which

Both systems are kept ready on every truck. The choice isn't religious — it's job-based. Default to battery for residential, anywhere noise or exhaust matters, and short-duration work. Default to gas for commercial, tall/wet/heavy growth, and long days where you don't want to be swapping packs every 45 minutes.

Grab BATTERY (DeWalt 60V trimmer / 20V blower) when: the property has noise restrictions or quiet-hours rules, you're working close to building entries, the homeowner is home and outside, the job is small enough that one or two packs will finish it, you're indoors or near open doors/windows, or the temperature is mild (battery range drops sharply in the cold).

Grab MIXED-GAS (Stihl trimmer / brush-cutter / Troy-Bilt backpack) when: the growth is tall, wet, or matted; it's a commercial property or HOA common area where speed wins; you're cutting brush, saplings, or anything the string head bogs on; it's a multi-hour cleanup where running back to a charger kills the schedule; or it's cold enough that battery run time would tank.

When in doubt, take both. Battery on first pass for the visible-from-the-street work, gas to finish the heavy stuff out back.

Brush-Cutter Safety — Read Before Every Use

The brush-cutter trimmer with the metal blade installed is the most dangerous handheld on the truck. It does not behave like a string trimmer. Read this every time before you put it on, no exceptions.

  • PPE is mandatory and non-optional: ANSI Z87.1 safety glasses or full face shield, hearing protection, long heavy pants (chaps preferred for dense brush), steel-toe or composite-toe boots, snug-fitting gloves, long sleeves
  • Two-handed grip at ALL times — never one-handed, never overhead, never above shoulder height
  • Harness/shoulder strap REQUIRED — the tool weight goes on the strap, not your arms. Adjust so the blade hangs at mid-thigh when relaxed.
  • Clearance: NO ONE within 50 ft (15 m) — bystanders, coworkers, pets, vehicles. Stop the engine if anyone enters the zone.
  • Blade-rated shield/guard ONLY — the smaller string-trimmer guard does NOT cover the blade. Confirm the correct shield is installed before starting.
  • Cut with the 8-to-11-o'clock zone of the blade (left edge swinging right-to-left). Cutting in the 12-to-3-o'clock zone is the kickback zone — the blade grabs and throws the tool back at you, fast.
  • Match blade to growth: brush blade for woody stems within rated diameter, weed/grass blade for matted weeds. Do NOT cut anything thicker than the blade is rated for — drop to a chainsaw or hand tool.
  • Keep the blade sharp. A dull blade grabs instead of slicing, which causes kickback. Inspect for bent teeth, cracks, missing teeth before every use — retire any damaged blade.
  • Confirm blade bolt is torqued to spec and the rotation arrow on the blade matches the gearbox direction (cutting edge leads).
  • Refuel only with engine off and cool — same as any 2-cycle tool. Use ONLY PREMIUM 91+ at 50:1 from a can clearly labeled "MIX 50:1 — PREMIUM."
  • Never set the tool down with the engine running. Never carry it running with the trigger held. Engine off, blade stopped, then move.

The Trimmer Operator's Role

The trimmer operator's job is to prepare the property for the mower — not a secondary role. The mower is fast and efficient on open turf, but it physically cannot reach interior corners, pick up garbage or sticks, or navigate tightly around many obstacles. The trimmer operator handles all of that first.

A good trimmer operator means the mower operator never has to stop, slow down, or back up. The two roles work as a system: trimmer leads, mower follows. When the trimmer operator does their job right, the mower can run clean lines from start to finish and the whole job looks finished.

The standard is simple: not a single blade of grass goes uncut. There is no such thing as "we don't need to get that area" or "it's close enough." Every corner, every fence line, every awkward strip next to a wall — it all gets trimmed. Before you walk away from any property, stop and take five seconds to look around. Actually look. Because nobody notices the crisp stripes or the clean edging. The only thing anybody ever sees is the one blade of grass you missed. Nobody cares what you did — they only see what you didn't do.

Pre-Trim Walkthrough

Before starting any trimmer, walk the full property. This takes 2–3 minutes and prevents damage, injuries, and ugly callbacks.

Pick up all garbage, sticks, and debris. Anything on the ground becomes a projectile at trimmer speed — rocks, wire, dog toys, plastic bags — or it jams the head mid-job. Pick it up before you start.

Identify every obstacle the mower cannot navigate: tight corners, bed borders close to structures, areas with no mowing clearance. These are your priority trim zones.

Note any hazards and communicate them to the mower operator before they start their pass. Hidden irrigation heads, buried edging, unseen rocks, or low-hanging branches that could catch a throttle hand — call these out now, not after something gets hit.

Corner & Obstacle Technique

Pre-trim all corners and obstacles before the mower reaches them. The goal is to shape the uncut grass so the mower can pass through cleanly without stopping or maneuvering.

Interior/concave corners (where two fences meet, where a wall meets a building, any 90° pocket): trim a triangle fill across the corner. Cut from one wall edge diagonally to the other, removing the wedge of grass the mower deck cannot reach. This lets the mower operator take one straight pass through the corner instead of stopping and turning.

Isolated obstacles (trees, posts, light poles, signage): trim an oval around the obstacle, oriented in the direction of mower travel. An oval aligned with the mow lines lets the mower arc smoothly around the object without pivoting. Pivoting causes torn-up donut rings in the turf — avoid it.

When approaching tree trunks, taper the cut — angle the head to feather the transition gradually. Never contact bark with the line. Install tree guards on young or thin-barked species.

Edging Technique

Edge every sidewalk, driveway, curb, and patio border on every visit. Consistent edging is what separates a finished property from a mowed one.

Technique: hold the trimmer head at approximately 45°, positioning the tip of the line so it bites into the joint between the turf and the hard surface edge. The goal is a clean tapered line — not scalped flush with the ground, and not ragged and uneven. The line should be working the edge, not lying flat on the surface.

Do not run the head flat and parallel to the surface. That burns the grass down to bare soil and creates a dead strip along the edge. Keep the angle and let the tip do the work.

Blow all edge debris back onto the lawn after edging — never onto the sidewalk, driveway, or street.

General Trimmer Technique

Hold the trimmer head parallel to the ground, level with the mowed turf height. Use a sweeping U-shaped motion and walk at a steady pace for even results. Keep your pace consistent — moving too fast leaves uncut strips, moving too slow scalps.

Keep the guard positioned correctly at all times. It controls line length and deflects debris away from you. Company standard line is 0.095-inch for all trimming work.

Tilting the head creates bare spots. If you see scalping, you're not level — adjust your wrist angle and slow your pace.

Spin Direction & Debris Control

The trimmer head spins counterclockwise — meaning debris and clippings exit off the right side of the head and fly toward your left. Once you know that, you can aim where the mess goes instead of just hoping.

Tilt the head angle to steer clippings intentionally. Tilting slightly toward the operator throws clippings back at you (or inward toward the lawn). Tilting away throws them outward. Use that to your advantage on every run.

Default rule: when you are near vehicles, people, structures, windows, or anything that can be damaged or dirtied, angle debris toward yourself or inward. It keeps the mess on you and out of trouble.

Two common examples:

Sidewalk or driveway edge — tilt the head so clippings blow back into the yard, not onto the walk or drive. This saves a blowing pass and keeps the hard surface clean for the customer.

Curb or street edge — tilt so clippings blow into the yard, not into the street or gutter. Clippings in the street wash into storm drains, look bad, and create extra blowing work after you thought you were done.

Consciously directing clippings on every run reduces double-handling. The less mess you scatter, the less you clean up.

Safety & Equipment Care

Trimmers and edgers launch debris at high velocity. Wear safety glasses or a face shield, hearing protection, long pants, and closed-toe boots — every time, no exceptions. Check the line spool before each job and carry spares on the trailer. Inspect the drive shaft, trigger, and guard before starting.

Stop trimming when anyone — bystanders, pets, vehicles — is within 30 feet. Refuel only with the engine off and cool; wipe spills immediately. Replace worn bump knob springs and eyelets when line feeding becomes inconsistent. Store trimmers upright or on rack hooks to protect the head and shaft.

Checklists

Pre-Job Handheld Check (Before Leaving the Shop or Truck)

  • DeWalt 60V trimmer: primary pack at full charge, one charged spare 12.0 Ah pack on the truck
  • DeWalt 20V blower: primary pack at full charge, one charged spare 8.0 Ah pack on the truck
  • Battery packs in the cab (not the bed) if temperature is below 40 °F
  • Stihl trimmer: fuel can labeled "MIX 50:1 — PREMIUM" with date, can at least half full, mix less than 30 days old
  • Brush-cutter trimmer: fuel can confirmed (same MIX 50:1 — PREMIUM), blade-rated shield installed, blade bolt torque visually correct, blade edge sharp and undamaged, rotation arrow correct
  • Troy-Bilt backpack blower: fuel tank topped off with PREMIUM 50:1, harness straps adjusted to operator, throttle moves freely, no fuel weep at cap
  • All trimmer line spools loaded with 0.095-inch line (company standard); spare spool on the truck
  • PPE on the truck: safety glasses, hearing protection, gloves; chaps and face shield available for brush-cutter use

Trimming & Edging Checklist

  • Pre-trim walkthrough complete: garbage, sticks, and debris picked up; hazards communicated to mower operator
  • Interior corners pre-trimmed with triangle fill before mower arrives
  • Obstacles (trees, posts, light poles) pre-trimmed with mow-direction oval before mower arrives
  • All hard borders edged (sidewalks, driveways, curbs, patios) — 45° head angle, tapered line, not scalped
  • Debris directed away from hard surfaces, vehicles, and structures — clippings aimed into the yard at curbs and edges
  • Verify no tree bark damage or scalped areas
  • Blow all edge debris and clippings off hard surfaces, back onto lawn
  • Inspect trimmer line level and refill with 0.095-inch line if needed
  • Clean trimmer head and guard of wrapped debris
  • If brush-cutter blade was used: blade re-inspected for damage, bolt re-torqued, blade-rated shield still in place
  • Battery packs and gas cans returned to their truck stations (cab for batteries in cold)