Content
- The sturdy lupine can hibernate outdoors
- Hibernate lupins in the field
- Protect lupins in the pot from frost
- Preparations for the winter
- Tips & Tricks
The sturdy lupine can hibernate outdoors
Lupins are probably among the most robust ornamental shrubs in the garden. They tolerate minus temperatures and get by in winter without any winter protection. Only if you keep lupins in the pot on the terrace, you must protect them from too low temperatures.
Hibernate lupins in the field
Lupins that grow freely in the garden do not need to protect you from frost. They survive even temperatures of minus 25 degrees without problems. The perennial forms long roots that can penetrate up to two meters into the ground. The plant thus has access to the groundwater even in cold weather and does not dry out completely even in sub-zero temperatures.
It is often recommended that the lupins be cut down to the ground in the fall for the winter. Of course you can do that. This is not necessary.
Most of the above-ground components are self-absorbed during the winter. The remains remain on the surface and are overgrown in the spring by the new shoots. They serve as additional fertilizer in this way.
Protect lupins in the pot from frost
Lupins in the pot do not necessarily freeze at low temperatures. What really harms them is the dryness. It arises when the moisture in the soil is frozen rock hard and the roots can absorb no more liquid.
The lupine dries up sooner. That's why she needs winter protection so she can absorb some water even in winter.
Preparations for the winter
Shorten the lupine in the pot and cut off all inflorescences. You do not have to cut down the plant completely.
Cover the surface with permeable material. Tannenzweige are well suited because they keep cold but still let moisture through. The earth does not mold then.
Tips & Tricks
Older plants that do not produce as many flowers, you should tear out in the fall. If you divide the root and plant the cuts before the winter, you will get young plants. They bloom already in the following year, so that the missing perennials do not attract attention.