Status: 01.10.2023, 20:17 p.m.
By: Natalie Hull-Deichsel
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Hydrangeas especially delight their owners with their blooms in spring and summer. Good to know what they need to survive even cold days.
The ideal planting season for hydrangeas is from the beginning of March to the end of July, when gardeners and flower lovers enjoy the colourful flowers every year. When autumn approaches, there is often a great deal of concern about how the popular plant will get through the cool days and winter. Similar to other garden plants, some hydrangea species should also be pruned in autumn. With the right tips, the ornamental shrubs - whether in pots or beds - can survive frosty days well.
Getting hydrangeas through the cold days: pay attention to winter-hardy varieties when buying them
Hydrangeas are spectacular ornamental shrubs. © Roman Martin/DPA
If you want your hydrangeas to be well prepared for winter, opt for winter-hardy and less sun-loving varieties at the time of purchase. Ultimately, this means less work in the fall, according to the portal hortensien24.de. The farmer's hydrangeas, climbing hydrangeas, panicle hydrangeas, forest hydrangeas, garden hydrangeas, Japanese hydrangeas and potted hydrangeas are considered to be less sensitive to frost and low temperatures. Sun-loving hydrangeas usually get through the winter worse, whereas frost-resistant hydrangeas survive the cold days better.
You can find even more exciting gardening topics in the regular newsletter of our partner 24garten.de.
Stop fertilizing hydrangeas in the fall
Already in the fall, hydrangeas should be prepared for cold days and nights, hortensien24.de continues. In addition to pruning, it also makes sense to stop fertilizing the ornamental plants. Fertilizer leads to further growth, which would harm the plant in winter. On mild days in winter, the hydrangeas could sprout again. New as well as older shoots can then freeze or freeze to death due to the renewed frost.
Until when should hydrangeas be fertilized?
Hydrangeas in the bed should no longer receive fertilizer after July. Fertilizing well into autumn can prevent the fresh shoots from lignifying and then be damaged on frosty days in autumn and winter. If you have freshly planted your hydrangeas, you should completely avoid fertilizer in the first year to ensure that deep roots form. Hydrangeas in pots or tubs that overwinter indoors can be provided with special liquid fertilizer until autumn.
Source: My beautiful garden
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Getting hydrangeas well through the autumn and winter: check the location and protect the plant
Hydrangeas in tubs or pots should be placed in a wind-protected location in winter, where temperatures do not drop below three degrees Celsius in the best case. On days with severe sub-zero temperatures, the plant can be protected in a container with brushwood branches, fleece or a jute bag to bring the hydrangeas well through the winter. Those who have planted their hydrangeas in the bed will cover the soil around the hydrangeas with a thick layer of foliage or fir brushwood from autumn onwards. At temperatures below zero degrees Celsius, the crown of the hydrangea should be covered with a non-woven bag.
