Lee Nelson Lee Nelson, an experienced freelance writer and former award-winning newspaper reporter.

Feb 22, Perform any trimming all the way up until mid February, when temperatures begin to rise in Arizona. Palm Trees. The best time to trim palm trees is considerably later in the year than citrus trees. Experts suggest waiting until after mid June to trim these trees. This is the best time of the year to remove seeds that are forming, plus any dead fronds or leaves. Feb 09, Your trees probably need to be pruned at various times of year.

A better method is to cut branches back to side branches at least one-third the diameter of the branches being cut.

December through February is the best time to prune deciduous trees. There Estimated Reading Time: 4 mins. Aug 20, Most routine pruning is done to remove infestation, weak, dead or diseased branches, and can be completed at any time during the year with little effect on the tree. Pruners should know as a rule, growth and wound closure are heightened if pruning happens in late winter before a spring growth spurt, confirms the ISA’s tree-pruning shrubgrinding.barted Reading Time: 6 mins.

John Eisenhower, a certified arborist with the International Society of Arboriculture, suggested homeowners look at standards set by the American National Standards Institute before pruning them or hiring someone to do the work.

For instance, with palm trees, the best time to trim trees in Arizona is when their health is at stake. For aesthetic reasons, trimming of palm trees should be done at least twice a year. For several varieties the best time is in July and January so seeds and related growth are removed as part of the process, but you can trim them whenever you see fit.

Pruning Basics Never remove more than 25‐30% of the canopy in any given year If the plant requires frequent pruning, then it may not be the best suited plant for that situation Usually best done in the early life of the plant Shearing of shrubs is labor intensive, generally.