By Beth Porter.

May 25, The spirea genus (Spiraea spp.) Spireas are cut back to the ground so that new, healthy shoots can grow. The two main trimming periods, in early spring and after blooming, are most important to do each year, but you can also trim your spirea as needed throughout any season. A bleach and water solution can be helpful for disinfecting pruning tools. Hebe is a genus of hardy bushes that does not require a great deal of care.

Most bushes can do with a light pruning and regular dead-heading but only when they become straggly, untidy or have been exposed to extreme weather conditions such as snow and ice do they need more dramatic care. Jun 27, Dogwood shrubs, such as red twig dogwoods, are not to be confused with dogwood trees.

While both shrubs and the trees belong to the same genus: Cornus, the shrubs will never become treeclean.bar are two species of dogwood shrubs: Cornus alba, which is the Tatarian dogwood, and Cornus sericea, which is the Redosier treeclean.bar species are much alike in their cultural needs.

Jul 26, Typically, viburnum shrubs should be trimmed back about a third of their size each year. Most pruning is done for shaping purposes only. However, old or overgrown shrubs may require some rejuvenation. Thinning out of unsightly branches can help open these shrubs up as well. Shearing and Pinching 1. Make 6-inch or 8-inch cuts around the shrub with a pair of hedge pruning shears.

Focus on snipping growth from the 2. Examine the plant for any wilted, discolored or dead flower trusses or leaves. 3.

This handsome open, loose shrub reaches 4 to 8 feet high and 6 to 8 feet wide.

Pinch wilted, discolored or dead flowers or leaves with your finger and. Jul 16, To prune wisteria, start in late winter when the branches are bare and easy to reach. Use pruning shears to cut the long shoots down until only 2 to 3 buds are left on each one, then snip off the whip-like water shoots.

Avoid pruning again until late summer, right after the wisteria finishes treeclean.bar: 41K.