If you’d like to stop your hydrangea from getting too big, you can cut it down to half of its size. Since the flowers are fresher, they will last longer in your arrangement. Step 1: Cut the Branch. Old Wood vs New Wood. I pruned around the edges last fall to try and get it to grow up rather than out and flopp over. In the summer they would stand about 8 feet tall, I would normally remove dead branches in the summer but now they are all cut down to the ground. Choose a large enough pot for the mature size of your specific hydrangea – at least 18 inches in diameter. if you want to do something now, pull … They start to push out new growth once warmer temperatures are felt, but then when the weather drops again, it can cause serious damage to that fresh growth. Prune to shape, cutting back to about two feet. If you live in an area that is prone to spring frost, protect these buds with bed sheets or frost cloth (a light felt) on nights that frost is expected. Use your pruning shears to cut old, under-producing stems back to within 2 inches of the ground immediately after the bush has finished flowering. It’s tough, though, to use pruning hydrangeas as a way to control plant height. Mulch annually with well-rotted manure or compost. You can also use the nodes as your reference for cutting. Can I cut branches back and, if so, at what period? leave them about a foot to 18 inches tall. Grow hydrangeas in a partially shaded, sheltered spot, in moist but well-drained soil. In Japan, hydrangeas are said to be a sign of gratitude because ancient emperors would give them to their maidens as a sign of thanks. Hydrangea serrata can be pruned in the same way. Bigleaf hydrangea varieties should be pruned after the blossoms have faded in the late summer. While deadheading your hydrangeas can be helpful for new growth, Myers says too much pruning can be detrimental. Choose only the most mature blooms. The right time to cut back “Endless Summer” if you want to control its size or shape is immediately after it finishes blooming in early fall. Photo: www.fast-growing-trees.com Question: I have a hydrangea tree, but its branches are too long, so when it rains, the branches and flowers bend down to the ground. 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. If you cut the plant all the way to the ground, however, you’ll have to wait for flowers until the buds that grow in spring mature. The process is relatively simple, as long as you follow the basics of hydrangea care. These types of hydrangeas produce flowers on older wood, so you don’t prune them hard. You can cut off the dried flowerheads then or leave them on the bush for winter and even up the remaining stems. Don’t cut your hydrangea shorter than 18 inches (46 cm) above the ground. 5. The pruning promotes new, sturdy growth, which provides the blooms next season. Posted by Tamara Horne April 1, 2018 April 1, 2018 Leave a comment on Why, When and How to Prune Annabelle Hydrangea. Don’t cut it down to the ground, or you won’t get any blossoms in the spring, but you can remove any dead or weak stems and trim the bush to the size you want. Do I cut back hydrangeas after frost. The further south you go in their range, the less sun you should give them, but you can grow them in full sun in the northern parts of their range. and make sure they're shaped well (evenly). Hydrangea is best propagated through cuttings of the non-flowering branches. It had grown back again this year and had nice green leaves. If you have older hydrangeas that have gotten quite large and need to be cut back, make sure you prune at the right time of year according to the variety of hydrangea you planted. 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