Recently, a flower friend asked, should hydrangeas be re-cut in winter? Do you want to pick up leaves? How to manage hydrangeas in winter? If you also have the above questions, then Blue Demon's article today will be able to answer your questions.
Hydrangea winter management point
Hydrangea is actually very simple to manage, compared to the moon flower, hydrangea is simply free-range, and it is the annual flowering period as scheduled, so the blue demon rarely shares articles about hydrangea maintenance. Recently, the most asked question about hydrangeas is, should you pick up the leaves?
1. Do hydrangeas have to pick up leaves in winter?
Some flower friends say that the leaves can force the hydrangea to enter dormancy and better accumulate nutrients, but in addition to the warm areas of Guangzhou, other regions, hydrangea will naturally fall its leaves in winter. If you are in the Liangguang area, you can pick up the leaves.
However, if it is in other regions, such as Jiangsu, Zhejiang and Shanghai, the large-flowered hydrangea that is maintained outdoors, the blue demon recommends that you let it fall naturally in winter, and do not artificially pick up the leaves. Because the leaves of hydrangea in winter can block most of the frost, don't look at the recent cold, the leaves of hydrangea have become dark red, and even some have become more zoomed and brittle, but this is the leaf can still help the full buds below to shield the frost and reduce the frostbite of the full buds of hydrangea.
When after a period of frost, the buds of the hydrangea have the ability to cope with the cold, and at this time, the leaves of the hydrangea will also do their best to protect themselves and will fall off naturally. So don't see the hydrangea leaves tattered and ugly, just think about the leaves off, especially the current weather, the temperature is high and low, 2 weeks ago Zhejiang went straight to 30 degrees, and now it has lasted -6 degrees for more than a week, this kind of cliff cooling, the damage to the plant is particularly great.
I took a look at it today, the plants in the greenhouse were fine yesterday, and many of them are frozen and ripe today......
After all, I still couldn't withstand the dark hours before dawn......
For outdoor maintenance of hydrangeas, it is recommended not to manually pick the leaves in winter, if it is an indoor potted plant, you are free.
2. Should hydrangeas be recut in winter?
It may be the influence of the winter scissors of the month, and many flower friends have been asking recently, "Do you want to recut the hydrangea", which made me confused for a while.
Most of the large-flowered hydrangeas are flowering on old branches, and a small number of varieties are flowering at the same time as new and old branches, but no matter what kind of variety, do not re-prune in winter, because the varieties of old branches flowering, if they are re-pruned, they do not bloom in spring and summer.
If it is a variety with both new and old branches blooming, heavy pruning in winter will also affect the amount of flowering next year and the timing of flowering. The best time to prune after a large-flowered hydrangea is the best time to prune, no matter what type of large-flowered hydrangea variety, you can't go wrong with sticking to post-flowering pruning.
3. Key points of hydrangea winter management
If you can't afford to do something about hydrangeas, then Blue Demon recommends that you focus on the following 2 points.
(1) Pay proper attention to cold protection
The cold resistance of hydrangea is not particularly good, and when the temperature is lower than -5 degrees in winter, it is possible to freeze it, so when the temperature is continuously lower than -5 degrees, it is recommended to cover and keep warm at night to protect the bud point from frostbite.
During this period of time, the low temperature continues, the hydrangea planted by the blue demon ground, the bud points with leaves are very good, the leaves are cut off, and some of the bud points are frostbitten, for plants, frost is more terrible than low temperature.
In cold areas, outdoor hydrangea is sure to be covered and insulated, in cold areas in the north, outdoor hydrangea is recommended to choose new and old branches are flowering varieties, reliable, at least the old branches of the previous year are frozen, and the buds that grow first in spring can also bloom.
(2) Appropriate topdressing of winter fertilizer
Ground-grown hydrangea can now be topped with some fermented organic fertilizer as winter fertilizer to lay a good foundation for vigorous growth in spring. Organic fertilizer not only provides the nutrients needed for hydrangea growth, but also improves soil structure and maintains soil temperature. It is recommended to bury or sprinkle fermented organic fertilizer around the root system, and use about 2 kg of fertilizer for each tree.
If it is a potted hydrangea, you can now do not top dress, wait until the beginning of spring, before the hydrangea germinates, and then add a sufficient amount of base fertilizer when changing the pot. Of course, if you don't plan to change the pot, then you can also bury some fermented organic fertilizer on the side of the pot to supplement soil fertility.
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