Pruning other hydrangeas. This plant flowers on old wood grown during the previous season. We aim to enrich everyone’s life through plants, and make the UK a greener and more beautiful place. Because its major attraction is the foliage, any loss of blooms is less disappointing than in most other hydrangea varieties. Such plants fall into RHS Pruning group 4. Hydrangeas that bloom on old growth should only be pruned after flowering. Introducing "One Thing": A New Video Series, The Spruce Gardening & Plant Care Review Board, The Spruce Renovations and Repair Review Board, Late winter or early spring before new growth starts, Light pruning in late winter or early spring. Flower buds occur on new spring growth. It's probably not surprising that oakleaf hydrangea is easily recognized by its oak leaf-shaped foliage. In general, varieties that bloom on old wood should be pruned immediately after they flower. Winter-damaged stems can be cut back to living wood. Most pruning is carried out in late winter or early spring. Also known as panicle hydrangeas, peegees display massive snowball-shaped flower clusters in mid- to late summer. The bigleaf hydrangea often has flowers whose color changes with the soil pH: blue in acid soil and pink in alkaline soil. Bigleaf hydrangeas set their flower buds from late summer to early fall. Others bloom on new growth and should be pruned before they wake up in spring or as they are going dormant in winter. Shrubs like hydrangeas flower from mid to late summer on the previous year's growth. 020 3176 5800 Oakleaf hydrangea blooms on old growth and should be pruned immediately after it has finished flowering. Neglected, overgrown vines can be cut back to ground level in early spring to rejuvenate the plant. When to prune a hydrangea depends on when it sets its flower buds. times, RHS Registered Charity no. If the buds are set in the fall, spring pruning will remove the entire season's bloom. Hydrangeas that bloom on old growth should only be pruned after flowering. Spent flowers can be trimmed away as they fade to keep the plant looking tidy. Julie Thompson-Adolf is a master gardener and author with 13+ years of experience with year-round organic gardening, seed starting and saving, growing heirloom plants, perennials, and annuals, and sustainable and urban farming. Always remove dead, damaged, or diseased stems as the first step during routine pruning. When shortening stems, cut back to just above a pair of healthy buds. This shrub blooms on new wood. Remove the dead flowerheads in early spring, cutting back the stem to the first strong, healthy pair of buds down from the faded bloom, Cut out one or two of the oldest stems at the base to encourage the production of new, replacement growth that will be more floriferous, Poor or neglected plants can be entirely renovated by cutting off all the stems at the base. Guide to Pruning Hydrangeas. Mophead and lacecap hydrangeas will bloom satisfactorily with little attention, but regular pruning encourages new, vigorous growth that can produce a better display. Smooth hydrangea, including the popular cultivar H. arborescens 'Grandiflora,' doesn't usually have any problems blooming, though its white flowers aren't as showy as we normally expect from hydrangeas. But don’t prune all the old wood because this is what will keep flowering as the new growth matures. The flowers start out white and slowly turn pink, drying and remaining on the plant long after the leaves have fallen. Even a harsh winter or late spring frost can damage thes… 222879/SC038262, Dead blooms on mophead hydrangeas can, in mild areas, be removed just after flowering, but it is best to leave them on the plant over winter to provide some frost protection for the tender growth buds below. If you live in an area with severe winters, you might need to offer it some protection. Mountain hydrangeas are small flowering shrubs with narrow, pointed leaves and flattened flower heads. During the growing season, you can deadhead the flowers (remove spent flowers) and clean up the overall shape of the plant as soon as the flowers become unattractive. This is the most common hydrangea variety. Tying the branches together and wrapping them with burlap can help the plant survive winter. University of Maryland Extension, Marie Iannotti is an author, photographer, and speaker with 27 years of experience as a Cornell Cooperative Extension Horticulture Educator and Master Gardener. Once climbing hydrangeas become established, they can grow quite vigorously and might need occasional late winter pruning to set boundaries for the coming season. This plant is sometimes confused with Hydrangea macrophylla because of their similar flowers. Proper timing for pruning is the key to keeping hydrangeas flowering to their best potential. However, this will remove all the flowers for that summer, and the new stems will not bloom until the following year, Established plants will tolerate hard pruning in spring, but extensive cutting back all in one go is likely to reduce flowering for the next couple of summers. The stunning climbing hydrangea is the type you see slowly making its way up a tree or other support. Although the only essential work is to remove dead wood in spring, these species flower more prolifically when pruned back annually to a framework of branches.