Regular maintenance of garden clippers (pruners, shears, and loppers) significantly extends their lifespan. Neglect allows plant sap and debris to accumulate, dulling the cutting edge and impeding pivot mechanisms. Pathogens from diseased plants can also linger on the blades, posing a serious risk during subsequent pruning. A thorough cleaning and sanitizing routine ensures clean cuts and prevents the accidental spread of fungal, bacterial, and viral diseases throughout your landscape.
Initial Removal of Debris and Sap
The first step involves the physical removal of all visible organic material, which can harbor moisture and reduce disinfectant effectiveness. Use a stiff-bristled brush or a rag dipped in warm, soapy water to scrub away loose dirt and plant residue from the blades and moving parts. This clears the bulk of the debris built up during use.
Plant sap and resins often require a stronger solvent for complete removal. For stubborn, gummy residue, a penetrating oil like WD-40 or mineral spirits applied to a cloth can effectively dissolve the material. Apply the solvent directly to the blades, allow it to break down the sap, and then wipe the surfaces clean. Avoid overly abrasive materials on the cutting edge during routine cleaning, though steel wool can be used carefully to remove rust spots.
Sanitizing Blades to Prevent Disease Spread
After removing all organic debris, the next step is to sanitize the blades to neutralize lingering plant pathogens. Sanitizing is a preventative measure that should be performed even if disease is not suspected, and especially when moving between different plants. Since dirt and sap shield pathogens, pre-cleaning is essential for the disinfectant to work correctly.
A highly effective option is 70% isopropyl alcohol, used at full concentration or higher. Alcohol acts quickly by denaturing microbial proteins; blades can be wiped down or dipped for a minimum of one minute for effective sterilization. An alternative is a freshly prepared household bleach solution, mixed at a ratio of one part bleach to nine parts water. Bleach requires a longer contact time, so blades must be submerged or soaked for five to ten minutes to destroy spores and viruses. Immediately rinse the clippers thoroughly with clean water after using the corrosive bleach solution to prevent metal damage.
Drying and Protecting the Metal
The final stages focus on protecting the metal components from corrosion and ensuring smooth mechanical function. The immediate concern after liquid cleaning is “flash rust,” which occurs quickly on carbon steel blades when moisture is present. The clippers must be completely dried with a clean, absorbent cloth, paying attention to the pivot point, springs, and crevices where water might collect.
Once the clippers are fully dry, apply a light coating of lubricating oil to all metal surfaces and moving parts. Effective choices include mineral oil, 3-in-1 oil, or specialized non-toxic options such as Camellia oil. Apply a few drops to the pivot bolt and wipe a thin film across the blade surface to minimize friction and create a barrier against moisture. Proper storage in a dry, low-humidity location contributes to the tool’s longevity, preventing rust and keeping the clippers ready for use.