Using grass shears is straightforward: hold the long-handled tool with blades parallel to the ground for flat trimming or vertical for edging, squeeze the handles to cut like scissors, and move slowly across small sections for a clean, professional finish.
For the full breakdown, see our best Cordless Grass Shears With Extension Handle guide.
Grass shears look like long-handled scissors with the handles at right-angles to the blades—distinct from pruning shears where handles run parallel. They let you trim grass from a standing position, making them ideal for edges, fences, patio borders, and spots lawn mowers can’t reach. This guide covers the two blade orientations, the exact steps, a few maintenance tricks, and what not to do.
Horizontal vs. Vertical Blades: Which Do You Use When?
Crucial first decision: choose the correct blade orientation for the task or the results will look wrong.
Horizontal blades lie parallel to the ground. They trim grass on flat surfaces—think the strip between sidewalk and street, or the patch the mower missed against a flower bed. Use them to level uneven growth without digging into the soil.
Vertical blades stand perpendicular to the ground. They create a crisp line along lawn borders, driveways, patios, and pathways, cutting grass that grows over the edge. Never use vertical blades for flat surface trimming—they’ll leave a ragged, uneven cut.
Step-by-Step: How to Use Grass Shears Like a Pro
Four steps get you a clean edge every time, whether you’re on turf or hard surfaces.
- Position the blades. For general trimming on flat ground, orient blades parallel to the ground. For edging along borders, orient them vertically against the grass edge.
- Grip and squeeze. Hold the handle firmly and squeeze to close the blades, cutting the grass like a pair of oversized scissors. Do not yank or twist.
- Move slowly. Slide the shears forward while cutting. Moving quickly leads to skipped spots and jagged lines—work at a steady, controlled pace.
- Cut small areas at a time. Tackle a few inches per squeeze. Trying to cut a wide swath bogs the blades down and strains your hands. Overlap each cut slightly for a consistent trim.
On patios or paths, you can use horizontal blades to control grass height or vertical blades to slice weeds growing over the edge—same orientation logic, different surface.
Maintenance: Keeping Shears Sharp and Smooth
The top user complaint is sticky or dull blades. Prevention takes thirty seconds.
Clean sap immediately. Sap and grass residue build up fast and make the pivot stiff. Wipe the blades with an oily rag after each use—mid-trim too if you notice resistance. Oil the pivot point regularly with a drop of light machine oil. Check blade tension. If the blades feel loose or misaligned, adjust the tension screw so they meet cleanly without binding.
Sharpening: Many quality shears are self-sharpening—no action needed. If yours aren’t, disassemble if possible, clean each blade, then use a medium file or whetstone on the beveled edge only. Keep the original angle; sharpen just one edge per blade.
| Blade Material | Why It Matters | What to Look For |
|---|---|---|
| Stainless steel | Rust-resistant, durable | Preferred for longevity |
| Teflon-coated | Resists sap buildup | Easier cleaning mid-task |
| Self-sharpening | No manual sharpening needed | Check product description |
3 Mistakes That Ruin the Finish (And Their Fixes)
Mistake 1: Moving too fast or cutting too wide. Skips grass and leaves a ragged edge. Fix: slow way down, cut a few inches per squeeze.
Mistake 2: Using horizontal blades for edging or vertical blades for flat ground. Produces an uneven, messy look. Fix: match orientation to the job—horizontal for flat, vertical for borders.
Mistake 3: Not cleaning sap immediately. Blades become sticky and hard to open. Fix: wipe sap off mid-session if you feel resistance; always oil after finishing.
Best practice order: mow the lawn first, then edge with shears.
References & Sources
- Wikipedia. “Grass shears” Defines tool design, blade orientation, and usage distinctions.
FAQs
Can grass shears cut through thick weeds?
Manual grass shears handle thin stems and light weeds but struggle with thick, woody growth. For heavy weed trimming, use pruning shears or a string trimmer instead. Short-blade shears work well for soft trimming of herbaceous perennials and heathers.
Do I have to sharpen grass shears myself?
If yours lack that feature, sharpen only the beveled edge with a medium file at the original angle. Never sharpen the flat side of the blade—that ruins the cutting action.
Can I use grass shears to trim hedges?
Manual grass shears with short blades are fine for light shaping of small leafy hedges and soft trimming. For any significant hedge work, dedicated hedge shears with longer blades do a faster, cleaner job.