You want to do it anytime after the first freeze through the end of winter. If they need pruning to maintain size or shape, do it in the summer, preferably before August. Prune in late winter/early spring when your plant is winterized. H. arborescens bloom on new wood. ‘Annabelle’ is one variety in the species H. arborescens. Hydrangeas are deciduous and benefit from annual pruning to encourage new growth, to remove damage and to control the size and shape of the shrub when needed. Mophead hydrangeas do not have to be pruned back unless they are very old. (Stems that have been on the hydrangea since the summer before the current season.) Prune out deadwood and weak growth. Pee Gee Hydrangea (H. paniculata), also known as Panicle, usually flowers on the current seasonâs ⦠Just look for the first set of fat new buds, as in the picture above, and prune back the stem to just above this new growth. The so-called ever-blooming hydrangeas, such as Endless Summer and Blushing Bride, should be treated the same. Prune these hydrangeas only if they are getting too large for the space or if you want to remove old flowers. The pruning promotes new, sturdy growth, which provides the blooms next season. Prune in late winter and early spring. Smooth and panicle hydrangeas flower on new growth, which means you can prune stems in late winter to early spring. They produce flower buds in August, September or October for the following summer’s blooms. Instead, transplant your too-large, still-dormant hydrangea to a new spot in early ⦠French or bigleaf hydrangea (Hydrangea macrophylla) -- By far, the most popular of all hydrangeas for its showy, blue or pink, snowball-shaped summer blooms. Because they bloom on new wood, prune these in early spring before they sprout new foliage. Its  blooms may bring lollipops to mind. You can prune limelight hydrangeas at any time of the year, because they are hearty plants. Smooth (hydrangea aborescens) One variety, Annabella, has big flowers that are actually made up of many small individual blooms. â New wood â means stems that have emerged during the current growing season. Pruning your hydrangea blooms will only help your shrub's growth for next year. To maintain its treelike appearance, with a well-defined âtrunk,â also remove any suckers that appear at the base of the plant as well as any growth that appears on the trunk itself. These types of hydrangeas can be identified by their cone-shaped flowers. In this video I show how to prune Hydrangea macrophylla. Even a harsh winter or late spring frost can damage the⦠Unfortunately H. macrophylla is the variety most susceptible to winter bud injury in Southern Ontario. You should prune your Annabelle hydrangea very lightly at the beginning of fall. The first step in pruning hydrangeas is to determine what type of hydrangea you have. ( Stems that developed on the plant during the current season) So late winter or early spring is the time to prune. There are two varieties in our area that bloom on new wood. When itâs the right time to prune your hydrangeas depends on the type of hydrangea you have. When pruning a hydrangea, it's best to take off no more than one-third of the plant at any one time. Cut any dead branches to the ground at any time; they’ll be brittle, so easy to identify. Removing dead stems and blooms is the only pruning that should be done for the health of the plant, and these can be removed at any time. How to prune Annabelle and mophead hydrangeas. If those stems are pruned in the fall, winter, or spring, the bloom buds will be removed, and there may be little or no bloom the following summer (usually June/July for the northern hemisphere). The first step of pruning hydrangeas is to identify the variety, as this determines how, when, and even if it needs pruning.There are 2 main groups of hydrangeas: Group 1: Those that bloom on last year's growth, or old wood, and should be pruned in late summer: Oakleaf hydrangeas (H. quercifolia)Bigleaf hydrangeas (H. macrophylla)Mountain hydrangeas (H. serrata) Both French and oakleaf hydrangeas flower on old wood (last yearâs stems), so you should prune plants right after flowering is finished. Other than the modern repeat blooming hydrangeas, like \"Endless Summer\" and \"Lime Light\", most older hydrangeas set the next season's flower buds in either late summer/fall or during the growing season. Hydrangeas that set their buds late in the season are the most likely to have trouble blooming. Prune to shape, cutting back to about two feet. Gardening Guides provide introductory information on a broad range of horticultural topics. Lacecap hydrangeas such as Hydrangea macrophylla and the related H. serrata, plus H. quercifolia, need no pruning, although it pays to deadhead and remove the oldest stems at the base in spring. Judith King, a member of the American Hydrangea Society put a website together called: Hydrangeas, Hydrangeas! ⢠Typically pruned after flowering or early fall to encourage new flower buds on old stems. So late winter or early spring is the time to prune. If you know which species of hydrangea you have, but are uncertain of their characteristics: A lot of confusion exists around when and how hydrangeas can be pruned but once a hydrangea is correctly identified, pruning becomes fairly easy. They have beautiful big, showy flowers making them a must in many gardens. If you are removing damaged, wait until the leaves fall to do so. Most selections, such as the standard blue, 'Nikko Blue,' bloom on last year's growth. It is best to prune the panicle hydrangea or Annabelle hydrangea after they have bloomed in the summer. It will grow from that point onward, getting larger each year. If the blooms on your hydrangeas are white, consider the possibility that they are not macrophyllas but are one of the other species. And finally, a brief description of hydrangea varieties and hybrids now on the market: Gardening Guides provide introductory information on a broad range of horticultural topics. Many gardeners are hesitant to prune hydrangeas because they think it is counterproductive to get rid of the blooms, but that couldn't be further from the truth. The most commonly grown hydrangeas in gardens are lacecaps and mopheads â mopheads are identified by their full, roundish heads of large petals; lacecaps have tiny flowers in the centre of the bloom and an outer border of large petals. Remove the burlap when the buds begin to swell. Just look for the first set of fat new buds and prune back the stem to just above this new growth. So if you prune ⦠These hydrangeas bloom on old wood. The nickname mopheads (H. macrophylla) is descriptive of the shape of their blooms.  bloom on new wood. Blue, pink and purple are the most common colours. It is fine to prune hydrangeas that flower on new wood (current yearâs growth). It makes its flowers on the current seasonâs wood. If you choose to prune, do it before August or you will be left with no blooms next year: hydrangeas set their buds in the summer the year before they are to bloom Remove dead stems and prune for ⦠Our winters can be  severe, so you might need to offer it some winter protection from severe winds to protect the flower buds. How to Prune Hydrangeas. This can also be done in very late winter in warmer areas, after the last hard frost. (Stems that have been on the hydrangea since the summer before the current season.) 1 Smooth Hydrangea â Hydrangea arborescens These huge blooms are notorious for falling over in wind and rain storms. If those stems are pruned in the fall, winter, or spring, the bloom buds will be removed, and there may be little or no bloom the following summer (usually June/July for the northern hemisphere). Pruning your hydrangeas to reduce their height isnât effective because they will grow right back to their original size, or even larger because the act of pruning stimulates new growth. White is fairly uncommon. If you know what type of hydrangea you have, check below for recommended pruning guidelines. Hydrangeas that flower on both new and old wood It is recommended to prune them like old growth blooming varieties. If those stems are pruned in the fall, winter, or spring, the bloom buds will be removed, and there may be little or no bloom the following summer (usually June/July for the northern hemisphere). If the buds are set in the fall, spring pruning will remove the entire season's bloom. Prune Annabelle hydrangea lightly just after its flowers fade in early autumn. ‘Annabelle’ is one variety in the species. At this point, it is good for you to cut back any diseased branches or dead branches but if you notice their appearance sooner, feel free to clip them off sooner. That species is root-hardy in Zone 6, but the canes with flower buds for the next year are not always hardy (sometimes frost will kill the canes). But if your hydrangea is getting much too large or old, use the following method. which I find it helps with pruning techniques for each type and offers further general information: https://www.hydrangeashydrangeas.com/index.html, 777 Lawrence Avenue East Toronto, ON, Canada M3C 1P2 | Phone: 416-397-1345, Copyright © Toronto Master Gardeners 2019, https://www.hydrangeashydrangeas.com/index.html. Early spring is prime pruning time, when buds are forming but before leaves are opening. Fall Blooming. Most need very little actual pruning. ( Stems that developed on the plant during the current season) So late winter or early spring is the time to prune. Or you can leave more of the woody stem in order to give the heavy heads more support. Hydrangeas that bloom on new wood require pruning in late winter or early spring. Since panicled hydrangeas flower from new growth produced starting in mid-spring, it will bloom abundantly even after a severe early spring pruning. You should only prune to remove dead wood. Unfortunately H. macrophylla is the variety most susceptible to winter bud injury in Southern Ontario. Panicle hydrangeas, Hydrangea paniculata: Often pruned as tree forms, these shrubs (Tardivas, PeeGees) explode with panicle-shaped white flowers in mid- to late summer. Prune as far back as you want right above the first leaf joints. If this is your kind of hydrangea, then spring pruning would cut off the flowers for that season. As mentioned above, some gardeners prune their hydrangeas hard to the ground (3-12â high) regularly. 777 Lawrence Avenue East Toronto, ON, Canada M3C 1P2 | Phone: 416-397-1345, Copyright © Toronto Master Gardeners 2019. hydrangeas bloom on old wood. When to prune a hydrangea depends on when it sets its flower buds. Although this can result in weaker, droopy stems, it shouldnât hurt a hydrangea. They are usually very large, and made up of tiny individual blossoms. This is often done to keep a plant small, globe-shaped, and âin-boundsâ. Familiarity with each type will help you determine when to best prune it and where to place your plant for best results. Prune your Hydrangea paniculata tree in the early spring before new, visible growth begins to emerge. They produce flower buds in August, September or October for the following summer’s blooms. Hydrangea aborescens and H. paniculata Endless summer hydrangeas are also known to bloom for a much longer period of time, typically 10 to 12 weeks longer, as compared to conventional hydrangea plants. The trick is that if you prune hydrangea improperly, you donât just risk a strange looking plant, you might eliminate the flower show. A lot of confusion exists around when and how hydrangeas can be pruned but once a hydrangea is correctly identified, pruning becomes fairly easy. Buds are formed on this new growth in the current growing season. You want to wait until the flowers have faded. Unfortunately H. macrophylla is the variety most susceptible to winter bud injury in Southern Ontario. Ok to Prune These Hydrangeas if Needed. Some people say that you can prune these hydrangeas as late as mid-August without affecting next yearâs bloom, but itâs best to prune no later than the end of July just to be on the safe side. These bigleaf hydrangeas are unique in ⦠This hydrangea, which grows on old wood, doesn't need much pruning but if you want to control its shape or size, clip in the summer before August when flowers' once-vibrant colors begin to fade. Tying the branches together and wrapping them with burlap isnât pretty, but it could mean winter survival. If those stems are pruned in the fall, winter, or spring, the bloom buds will be removed, and there may be little or no bloom the following summer (usually June/July for the northern hemisphere). Use garden clippers to remove faded flowers as well as several inches of growth from the tip of each branch. When to prune hydrangeas hinges on the type of hydrangea youâre growing. When to prune hydrangeas Most pruning is carried out in late winter or early spring. Step 2 Cut away any spent flowers that have remained on the tree over the winter with pruning shears. Theyâre fine with just enough of a trim to shape the plant, get rid of dead branches and encourage future blooms. See more ideas about when to prune hydrangeas, planting flowers, hydrangea garden. Pruning hydrangeas can keep these showy shrubs in tiptop shape and peak beauty. Pruning hydrangea snowball varieties is quite simple. How to prune hydrangea annabelle These shrubs should only be pruned to remove dead wood or to manage size. Hydrangeas That Bloom On Old Wood. The best pruning period goes from mid january up to mid february. ⢠Typically pruned in late winter or in early spring to encourage new stems. Aug 10, 2019 - Explore Andy Crocker's board "When to prune hydrangeas" on Pinterest. Hydrangeas are a very sought after plant, and have been for many years. The Hydrangeas require very little pruning and will keep you in blooms all season long. There is one trait that sets ‘Annabelle’ apart from most other hydrangeas – the blooms open green, turn white for 2-3 weeks, and gradually turn green again (at which time they can be used in dried arrangements). The best time to prune them is after they flower in the late summer. As they bloom on old wood, a severe pruning can remove next years flower buds.          Hydrangea paniculata (Peegee Hydrangea) â âLimelightâ being one of the varieties. However, it is easiest to prune them in the late winter or early spring, because all of the leaves will have fallen off and you will be able to see and access the branches easily. 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