Sep 24, If you need to reinvigorate neglected hydrangeas, cut off all the stems at the base, but this will remove all of the flowers so the new stems will not bloom until the following year.
To prevent flower loss, stagger drastic pruning over three or four years, reducing the size of the plant shrubfell.buzzted Reading Time: 5 mins. For these types of hydrangeas, it’s best to prune immediately after flowering. Paniculata or PeeGee hydrangeas offer a bit more flexibility, but in general, they should be pruned in early spring before new growth appears.
Other hydrangeas such as climbing hydrangeas may require very little pruning. How to Prune Properly. To prune your hydrangeas, start by cleaning out. May 10, If your hydrangea has grown quite large, you can prune it in June or July (just after the blooming season) to contain it a bit. Trim back the branches by 1/3 to the nearest joint. In most cases hydrangeas will grow back quite quickly, so you may not be able to maintain the smaller size for long%.
By pruning right after the blooms have faded, you allow the plant time to set buds for the next year.
Oakleaf (H. quercifolia) and bigleaf hydrangea (H. macrophylla), including Nikko Blue and all the other pink- and blue-flowering cultivars, bloom from buds set the previous year. If they need pruning to maintain size or shape, do it in the summer, preferably before August. Nov 28, Do not prune after August 1; the shrub needs time to develop new flower buds on the old wood.
Heavy pruning may reduce the number of. Sep 04, In your case, since your hydrangea tree is overgrown and the branches already bend under their own weight, it would be wise to prune it before winter. If not, there is a risk that they snap off in snowy or icy weather, so, in October or November, simply cut all branches back to about 6 to 8 inches (15 to 20 cm) from the top of the trunk.