Deciduous trees and shrubs. In winter, deciduous plants shed leaves and send food reserves to their roots. If you prune in winter or spring they then have ample resources to regrow and balance their roots with their top growth. If you prune in summer then you are removing food reserves in the green leaves. Cut the entire shrub back to a height of four to 10 inches from the ground when the shrubs are dormant. Shrubs that can tolerate rejuvenation pruning are butterfly bush, Annabelle hydrangea, potentilla, and Japanese spirea.
Shearing: This technique involves the removal of new shoots using hedge shears. Deciduous Shrubs. The proper time to prune deciduous shrubs is determined by the plant's growth habit, bloom time, and health or condition. Spring-flowering shrubs, such as lilac and forsythia, bloom in spring on the growth of the previous season. The plant's health or condition determines the best time to prune spring-flowering shrubs.
The Royal Horticultural Society is the UK’s leading gardening charity. We aim to enrich everyone’s life through plants, and make the UK a greener and more beautiful place. Join the RHS today and get 12 months for the price of 9. Many ornamental shrubs and trees can be allowed to grow without regular pruning.
However, occasionally you may need to restrict the size, remove dead or unsightly growth, increase vigour, improve the shape or keep the plant in a healthy state to produce flowers and/or berries. Some shrubs, if left unpruned, continue growing from where the. Pruning Deciduous Shrubs by John Ball, associate professor of forestry, and David Graper, horticulture extension specialist, Horticulture, Forestry, Landscape and Parks Department ExEx September Horticulture/Forestry Figure 1.
An example of a thinning cut. The cut is made at the point. Shrubs that lose their leaves in winter (deciduous) can be easily renovated by drastic pruning Renovating evergreen shrubs is slightly more difficult so check our advice page on these first Renovate deciduous shrubs between autumn and spring, usually between November and March.
Shrubs: larger for year round interest / RHS Gardening.