Hydrangea ( Hydrangea spp . ) graces gardens in U.S. Department of Agriculture plant hardiness geographical zone 3 through 9 . A hydrangea left on its own without pruning can eventually get out of hand , outgrowing its placement and its purpose . If you have a big , or even immense , hydrangea , you may lop it to the desire size .
Things Needed
Hydrangea ( Hydrangea spp . ) graces gardens in U.S. Department of Agriculture plant hardiness zone 3 through 9 . A hydrangea go away on its own without pruning can eventually get out of hand , outgrow its fix and its intention . If you have a big , or even huge , hydrangea , you may trim it to the desired sizing . Some hydrangeas blossom onold Ellen Price Wood — the late time of year ’s growth — so prune them justly after they bloom .
Step 1
Cut dead and old , knotty branches down to the ground with hand - concur trimmer . Use discerp shears if the stems are too big or too tough for pruner .
Step 2
Remove branches that span or crowd each other . snub them all the way to the ground . This opens up the crotch hair to light and air , causing the works to have fuller botany from the sum , outward . You should be leave with , roughly , the healthy two - third gear of the original plant .
Step 3
Trim the remaining branch to about half the size you want them to ultimately grow . Cut just above a exercise set of leafage , impart the stem no shorter than 12 inches . Trim to maintain a pear-shaped contour .
Tip
Hydrangea flower last so long that you ca n’t really wait until they ’re finished in fall to prune them ; you ’ll cut back off the following twelvemonth ’s buds , destroying their show . bask the blooms for a few weeks , and then prune . To minimize the loss of bloom , polish off one - third of the plant each twelvemonth . After the third year ’s cutting , you ’ll have a smaller , full and more vigorous bush . If the bush is woody and leggy , as oakleaf hydrangea ( Hydrangea quercifolia , USDA geographical zone 6 through 8) often is , apply this glide slope . Panicle hydrangea ( Hydrangea paniculata , USDA zones 3 through 8) bloom on new wood , so dress it in later wintertime or former spring .
Warning
As a precaution against go around plant pathogens , disinfect pruning blade with chafe alcohol before and after each pruning chore .
References
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