The answer to 'when to tree trimming' is that trees should be trimmed regularly, typically once a year or every 2-3 years, to maintain their health and appearance. Proper tree trimming helps remove dead or damaged branches, encourages healthy growth, and prevents safety hazards like falling limbs. The best time to trim trees is usually in late winter or early spring before new growth appears.
It's important to trim trees at the right time of year to avoid stressing the tree. Cutting during the growing season can damage the tree, while trimming in the dormant season allows the tree to heal properly. Professional arborists can assess your specific trees and recommend the optimal trimming schedule.