Content
- Are garden hydrangeas hardy?
- Planted garden hydrangeas need winter protection
- Hibernate garden hydrangeas in a bucket frost-free
- From October, place the tub hydrangeas in winter quarters
- Tips & Tricks
Garden hydrangeas are usually hardy; Flowers and buds freeze to death
Are garden hydrangeas hardy?
Altogether there are about 70 different species of hydrangeas, which in turn are subdivided into an almost unmanageable abundance of varieties. The winter hardiness of the individual hydrangea species is quite different and also very dependent on the location.
Early article For beautiful flower balls and healthy plants: Maintain garden hydrangea properlyPlanted garden hydrangeas need winter protection
Garden hydrangeas are not endangered by low minus temperatures. Although the shoots can freeze back, they keep drifting out in spring. This is exactly the same with many flowering shrubs in mid-summer, so you simply cut the frozen parts back in spring. The problem with garden hydrangeas, however, is the fact that the shrubs plant their flower buds already in late summer for the coming year. If these overwintering buds are now damaged by frost, the flowers will fail in the following summer. This is especially true for the garden or farm hydrangeas, but also for the Japanese plate hydrangeas (Hydrangea serrata). In exposed, windy locations, a good winter protection is extremely important, especially in winter sun.
Hibernate garden hydrangeas in a bucket frost-free
The hibernation of garden hydrangeas in the tub is problematic because the root ball freezes very quickly even with larger planters. Therefore, better winter the plants in a protected place, if necessary in the garage. Otherwise, garden hydrangeas can be outdoors in the tub from early spring to autumn. They can tolerate a few short-term freezes without causing any damage. But for a long time do not expose them to the cold. The problem with potted plants in general is that the root ball freezes much faster than in the bed. Therefore, the plants must winter in a frost-free, but cool and bright place as possible.
From October, place the tub hydrangeas in winter quarters
From October, the garden hydrangea should be brought to winter quarters, depending on the temperature. It is important that the shoots have set before the winter still strong buds, from which then develop the flowers in spring. Even in winter quarters pour now and then, because the earth may never completely dry out. Before entering into the winter quarters, you can cut back some of the withered shoots, and repotting is now possible. In any case, bucket hydrangeas should be repotted about every one to two years.
Tips & Tricks
To prepare for hibernation you should stop using fertilizer from about mid-August. At that time, the garden hydrangea ceases to grow and instead buds for the next year. Further fertilizers would prevent a sufficient Bud maturity.