Clethra Summersweet – Pruning, Winter Care and Fertilizing. This plant in general will need a minimal amount of pruning. Pruning can be rather important to the overall look of the plant.
Pruning should be done in early spring before leafing out. Crossing, winter killed, badly formed or damaged branches should be removed back to a main branch. Oct 14, Hold the pruning shears at an approximate degree angle and snip off some of the wayward growth. Look around the bush and uniformly prune off the branches that are longer than others and stick out too far. Sep 21, To deadhead your clethra shrub's flowers, use your pruning shears to trim the stem back to 1/4 to 1/8 of an inch above the bud below the deadheaded bloom.
The oldest, lowest branches on a clethra shrub should be cut back to ground level. You can improve the performance of this shade lover even more with proper pruning. 1. Cut off damaged, diseased or crossing canes from"Hummingbird" summersweet whenever you notice them.
2. Remove. Clethra Alnifolia Pruning Tips. Sweet pepperbush (Clethra alnifolia), a deciduous shrub, grows to 8 feet tall, in U.S. Department of Agriculture plant hardiness zones 4 to 9.
In summer, it.