The late dormant season is the best time for most pruning.
Prune to promote plant health Remove dead or dying branches injured by disease, severe insect infestation, animals, storms, or other adverse mechanical damage. If health of the shrub is the main concern, the dormant season is usually the best time.
Shrubs that bloom on new growth: This includes hydrangea, summer flowering spirea, and roses. Prune in early spring before growth begins. Pruning in late fall is acceptable but may lead to winter dieback.
Shrub Trimming Timing. The best time to prune depends upon the plant. Trim early-spring-flowering shrubs right after they bloom.
Summer-flowering plants should be clipped in winter or early spring. For non-flowering plants, trim after new growth has completely formed. Based In Bloomington (MN). The ideal time to pay attention to your shrubs is during winter since the leaves are long gone and most woody plants are dormant and therefore this is the ideal time to give the shrubs a trim. At Hedge Trimming Guys in Rockland, MA you will find out why, what and how to prune the shrubs. New seedlings, grown from seeds from hardy trees across Minnesota, are systematically infected with the cultured pathogen in the first step to develop a canker-resistant cultivar.
In the process, breeders will select for improved fall color, richer and varied flower color, and larger flower size. U of M Dogwood (Cornus) Varieties.