Great article—vital information for homeowners and arborists alike! 🌳 You’ve done an excellent job outlining why climbing spikes (or spurs) should be avoided during tree pruning. These tools create numerous puncture wounds through the bark and cambium, which not only kill tissue but also serve as entry points for pests, fungi, and bacteria—putting tree health at significant risk. The cumulative damage from repeated use can lead to scarring, decay, and long-term decline in tree vitality