Keeping your yard tools in good shape saves money and makes outdoor work easier. A simple routine of cleaning, sharpening, oiling and proper storage can extend the life of shovels, pruners, mowers and trimmers for many seasons. The University of Illinois Extension notes that high-quality tools cost more but last longer when cared for, and the time spent on maintenance pays off in the long run.

Key steps: Clean off soil and sap, sharpen blades at the correct angle, oil metal and wood, and store tools off the ground in a dry place.

Cleaning Hand Tools and Pruners

Soil and moisture are the main enemies of metal tools. The University of Illinois Extension advises removing soil with a wire brush, paint scraper, stiff brush or a strong blast from a hose. For small hand tools like pruners, wipe the blades to remove sap or moisture. Washington State University Extension adds that a stiff wire brush with a scraper end works well for shovels, hoes and garden forks, and that a nail brush or scrub pad with soap and water is effective for pruners.

Sticky sap can be stubborn. Both Illinois and WSU recommend using turpentine, alcohol, mineral spirits or paint thinner to dissolve it, followed by a wipe with a rag. WSU also suggests keeping a container of rubbing alcohol or a bleach solution (1 part bleach to 9 parts water) nearby to disinfect blades between pruning cuts, which helps prevent spreading plant diseases.

Sharpening Blades and Edges

A sharp tool cuts more efficiently and is safer to use. WSU explains that a dull blade crushes plant stems rather than cutting them, leaving wounds that heal slowly and are more vulnerable to infection. For shovels, WSU recommends sharpening at a 45-degree angle by running a file across the edge. Pruner blades should be sharpened at the same angle as the existing bevel, according to both Illinois and WSU. Illinois cautions against using power grinders because the heat can make the metal brittle. Instead, use a whetstone with oil, a diamond-coated flat file with water, or a bastard file for quick sharpening. WSU notes that larger or irregular blades, such as those on lawn mowers, may be trickier to sharpen evenly and can be taken to a professional for honing.

Illinois also points out that high-quality pruners can be disassembled for cleaning and sharpening, and many have replaceable blades. Inspect blades for cracks, nicks or burrs, and replace them if needed.

Oiling and Protecting Metal and Wood

Rust is a constant threat. WSU suggests soaking rusty tools in a 1:1 vinegar and water solution for 24 hours, then wiping dry and using steel wool to remove the rust. For severe rust, sandpaper or a wire brush attachment on a drill can be used, always with safety glasses. After de-rusting, wipe the metal with a coat of oil. Illinois advises applying a light lubricant such as WD-40 to metal surfaces to prevent rust.

Wooden handles need care too. Illinois recommends sanding rough spots and applying a protective coat of linseed oil, letting it dry, then polishing with a soft cloth. WSU suggests sanding handles with medium-grit sandpaper twice each season and rubbing them with a lightly moistened linseed oil rag. Allow oil rags to dry in the open air to avoid combustion risk. WSU says to store wood-handled tools indoors in a dry area.

Storing Tools Properly

Where and how you store tools matters (see also our garden tool storage guide). Illinois says to keep tools off the ground and away from the elements in a shed, garage or barn. Short-handled tools can be stored on a pegboard system; outlining the tools on the board helps identify missing items. Long-handled tools should hang on a rack or tool holder to protect their edges. WSU echoes this, adding that storing tools off the floor prevents moisture, rust and dulling. For any machine that must stay outside, WSU recommends a waterproof cover.

At the end of the growing season, Illinois advises a thorough cleaning, sharpening, oiling of metal and wood surfaces, and even applying a high-quality spray paint to metal for extra protection. WSU suggests setting up a simple cleaning station with a stiff brush, a rag and a bucket of sand or kitty litter moistened with mineral or linseed oil. Dragging the tool through the mixture after each use coats the blade and helps remove residual soil.

Powered Equipment: Mowers, Trimmers and Chainsaws

Power tools need their own maintenance routines; our lawn mower maintenance, chainsaw maintenance, string trimmer maintenance and hedge trimmer maintenance guides go into more detail. The University of Illinois Extension’s mower maintenance guidance covers homeowner mowers with light to moderate use. Check the oil level before starting when the engine is cold, and change it every year for most residential mowers. Air filters should be replaced at least once a year, and fuel filters annually. Spark plugs are typically changed every two years; always use the correct plug and gap measurement from the owner’s manual. Sharp mower blades are critical: a dull blade tears grass, leaving ragged wounds that heal slowly and invite disease. Disconnect the spark plug or remove the battery before working near blades. Sharpen with a bench grinder, grinding stone or file, and use a balancing cone to ensure the blade is even. Clean the mower deck after each use with a leaf blower or air compressor, and scrape off accumulated clippings with a putty knife.

For chainsaws, the Canadian Centre for Occupational Health and Safety (CCOHS) stresses following the manufacturer’s manual. Turn off the engine before any adjustment or cleaning. Check the chain for excessive wear, inspect drive links and sprockets, and replace damaged parts. Sharpen the chain with a round file for cutters and a flat file for depth gauges; check depth gauges every third or fourth sharpening. Adjust chain tension after the saw has run for five to ten minutes, as the chain stretches when hot. A loose chain increases wear and can climb out of the track, while an overly tight chain can damage components. Keep the chain lubricated with the correct grade of chain saw oil, and clean the chain-oil portal to prevent sawdust from blocking oil delivery. CCOHS also recommends having the saw inspected by a service centre periodically, every few months to a year depending on usage.

String trimmer and hedge trimmer care is outlined in the Greenworks operator manuals. For a cordless string trimmer, clean the machine after use with a moist cloth and neutral detergent; do not use aggressive solvents or spray water onto the motor. Keep the trimmer head free of grass and leaves, and keep air vents clear to avoid overheating. Remove the battery before any maintenance. For a hedge trimmer, lubricate the cutting blades before and after each use with light machine oil, and always place the blade cover on before storing. Clean the unit with a damp cloth and mild detergent, and keep air vents unobstructed. Store batteries in a cool, dry place, and recharge them every month or two if the tool is not used for long periods.

Maintenance Routine at a Glance

Tool Group Cleaning Sharpening Oiling/Lubrication Storage
Shovels, hoes, rakes Wire brush, hose blast (Illinois); stiff brush and rinse (WSU) File at 45° angle (WSU) Light oil on metal (Illinois); linseed oil on handles (Illinois, WSU) Off ground, hanging rack (Illinois, WSU)
Pruners, shears Scrub with wire brush, steel wool, soap and water (Illinois, WSU); remove sap with turpentine or alcohol Whetstone or file at bevel angle (Illinois, WSU) Oil pivot point (WSU); light oil on blades (Illinois) Dry, indoor pegboard (Illinois)
Lawn mower Leaf blower or air compressor on deck; scrape clippings (Illinois) File, bench grinder or grinding stone; balance blade (Illinois) Change oil yearly; check before each start (Illinois) Clean deck; disconnect spark plug or battery (Illinois)
Chainsaw Clean chain-oil portal, air filter, muffler (CCOHS) Round file for cutters, flat file for depth gauges; check depth gauges every 3 to 4 sharpenings (CCOHS) Chain oil with correct grade; refill when fueling (CCOHS) Drain fuel if stored long; service centre inspection periodically (CCOHS)
String trimmer (cordless) Moist cloth with neutral detergent; keep head and vents clear (Greenworks) Sharpen or replace the cut-off blade with a file if line does not cut well (Greenworks) Keep head free of excessive grease (Greenworks) Remove battery; cool, dry place (Greenworks)
Hedge trimmer (cordless) Damp cloth with mild detergent; clear vents (Greenworks) Inspect blades; use the maker’s replacement blades (Greenworks) Light machine oil on blades before and after each use (Greenworks) Blade cover on; remove battery; store in dry, well-ventilated area (Greenworks)

Frequently asked questions

How do I know when my mower blade needs sharpening?

The University of Illinois Extension explains that a dull blade tears grass rather than cutting it cleanly, leaving ragged wounds that are harder to heal and give disease a longer window. Ragged, torn tips after mowing are a sign to inspect and sharpen the blade. Always disconnect the spark plug or remove the battery before inspecting or removing the blade.

Can I use water to wash my string trimmer or hedge trimmer?

According to the Greenworks manuals, you should not spray water onto the motor or electrical components. Instead, clean the plastic parts with a moist cloth and a mild detergent. Keep the air vents free of debris to prevent overheating, and always remove the battery before cleaning.

What is the safest way to remove rust from garden tools?

Washington State University Extension recommends soaking rusty tools in a 1:1 vinegar and water solution for 24 hours, then wiping them dry and using steel wool to scrub off the rust. For heavier rust, sandpaper or a wire brush attachment on a drill can be used, but wear safety glasses. After de-rusting, coat the metal with oil to protect it.

For more guidance on choosing and maintaining garden tools, visit our Garden Tools section.

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