ENDLESS SUMMER THE ORIGINAL will often bloom on current season’s growth, but not consistently. Both appreciate a bit of shade from the afternoon sun and look great in mixed borders or massed together along a woodland edge. If you have ever purchased a hydrangea only to have the color of the flower change without warning, ‘Blushing Bride’ is here to help. Amy Dabbs, Horticulture Extension Agent, Charleston County, Clemson Extension. Heavy snow cover can protect the buds of bigleaf Hydrangeas, but this is obviously hard to predict. The timing of pruning for hydrangeas depends on which type of hydrangea you’d like to prune. Along with gorgeous flowers, oakleaf hydrangeas also provide spectacular fall color and attractive exfoliating bark in winter. This group of hydrangeas also includes the repeat bloomers, which bloom on both the old wood from the previous year and on current season’s wood. These hydrangeas include two forms: the mophead and the lacecap types. While pruning is not necessary for big leaf hydrangeas to perform, the best time to remove dead canes or rejuvenate an older plant is immediately after flowering. The different kinds of hydrangeas available can feel confusing when trying to determine the best time for pruning. Wait to prune until mid to late spring when you can assess winter damage, and only remove dead canes. While it’s generally not recommended to move woody ornamental shrubs in the summer, I have found that hydrangeas are quite forgiving as long as they receive plenty of water and are shaded from harsh summer sun. The Ask UNH Extension Infoline offers practical help finding answers for your home, yard, and garden questions. I say “ideally” because sometimes late season pruning is unavoidable. Join our mailing list to receive the latest updates from HGIC. Personally, I think these refined beauties are underutilized in home landscapes. The ENDLESS SUMMER series of Hydrangeas is a collection of bigleaf Hydrangeas (Hydrangea macrophylla). macrophylla) are some of the easiest, most reliable shrubs gardeners can grow. Pruning your Endless Summer hydrangea. After a severe winter, expect to see only a handful of flowers at the most. Milkweed is taking over my perennial garden. ‘Endless Summer’ is a widely available mophead hydrangea that will bloom on both old and new growth, so gardeners can prune anytime without fear of losing flowers. What am I doing wrong? An Endless Summer ® hydrangea blooms both on growth from the previous year as well as on new shoots from the current growing season. Follow all directions, precautions and restrictions that are listed. This information is supplied with the understanding that no discrimination is intended and no endorsement of brand names or registered trademarks by the Clemson University Cooperative Extension Service is implied, nor is any discrimination intended by the exclusion of products or manufacturers not named. In this case, forewarned is forearmed. If you need to prune your plant rest assured that it is very forgiving. Wait to remove winter protection until all danger of frost has passed in the spring. Closely related, lacecap hydrangeas (Hydrangea macrophylla var. If you’ve tried wrapping your plants and you still aren’t getting blooms, consider relocating your plant to a more protected site in your garden, or try another cultivar such as ENDLESS SUMMER BLOOMSTRUCK or ENDLESS SUMMER TWIST-N-SHOUT that bloom on new wood more readily. macrophylla). While we turn our attention to summer vacation, these garden work horses immediately start gearing up for next year’s flowers by developing their buds for next season. Bigleaf Hydrangeas primarily bloom on last year’s growth, or “old wood.” For this reason, bigleaf Hydrangeas should never be pruned in late summer or fall. Their flat, lacy flower heads make them easier to incorporate into the landscape than their blowsy counterparts. ‘Endless Summer’ is a widely available mophead hydrangea that will bloom on both old and new growth, so gardeners can prune anytime without fear of losing flowers. Therefore, pruning should be done with great care, as it can otherwise reduce the number of potential blooms for the next year. Keep in mind they need a minimum of 3 hours of morning sun to flower. Gardeners who yearn for hydrangeas but have too much sun for the big leaf types should consider the creamy white flowers and distinctively shaped foliage of the oakleaf hydrangea (Hydrangea quercifolia). This was your Question of the Week. Call toll free at 1-877-398-4769, Monday to Friday, 9 a.m. to 2 p.m., or e-mail us at answers@unh.edu. Otherwise, they require almost no attention once established. Mopheads aren’t the only hydrangeas that should be pruned immediately after flowering. All recommendations are for South Carolina conditions and may not apply to other areas. Native to the southeastern United States, oakleaf hydrangeas can withstand more sun and require less water than their Asian relatives mentioned above. Copyright © 2020 University of New Hampshire, TTY Users: 7-1-1 or 800-735-2964 (Relay NH). Invasive in the Spotlight: Multiflora Rose. There are a several cultivars available, including ‘Snowflake’, ‘Snow Queen’ and ‘Harmony’. DO: Take care to prune the flowers of the endless summer hydrangea during the summer months. As for late season cold snaps, all we can do is watch the weather and provide protection by covering the canes with frost blankets when needed. Best practice is to prune back stems that have just finished flowering to about 20 cm from the ground, leaving young new shoots to develop and flower later in the season … The ENDLESS SUMMER series of Hydrangeas is a collection of bigleaf Hydrangeas (Hydrangea macrophylla). Pruning last year’s growth effectively removes the next season’s flower buds. Common milkweed (Asclepias syriaca) is a perennial plant... University of New Hampshire Cooperative Extension Their flower color is not affected by soil pH. Acidic soils produce blue flowers, alkaline soils produce pink flowers, and a neutral soil pH yields a purple or mauve color somewhere in between. pruning hydrangeas. If your hydrangea has overstepped its bounds, you might consider pruning it back now and moving it to a more appropriate location. Bigleaf Hydrangeas primarily bloom on last year’s growth, or “old wood.” For this reason, bigleaf Hydrangeas should never be pruned in late summer or fall. How can I save some for the monarch butterflies but keep it from spreading. These vigorous growers can easily overtake their intended place in the garden. normalis) should be treated just like their botanical kissing cousins. DO: Cut one or two of the oldest stems all the way … Extremely low and fluctuating temperatures as well as late frosts are very damaging. Amy Dabbs, School and Community Gardening Coordinator, Clemson Extension. They flourish without fertilizer, chemicals or even pruning for that matter. phone: (603) 862-1520  Hours: M-F, 8 a.m.- 5 p.m. But ill-timed pruning is often to blame for a lack of blooms. It starts out white and matures to a lovely pink regardless of soil chemistry. Soils should drain well as “wet feet” will result in root rot. Try wrapping the plant with burlap or chicken wire and filling in the enclosure with leaves. COVID-19 Extension Updates and Resources ... More Information », Factsheet | HGIC 1096 | Published: Mar 7, 2016 | Print. If you must prune in winter or spring after buds have formed, take care to remove no more than ⅓ of the canes to ensure at least a few flowers for next season. Got questions? Other reasons hydrangeas do not flower include late season cold snaps that freeze flower buds and too much sun, which zaps the plants energy away from bud production.

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