The pennywort is a popular marsh plant that grows quickly and produces pretty yellow flowers. When it is in the aquarium, the winter cold is not a problem. But what is it like outside on the bank of a pond or in the balcony box?
Is pennywort hardy and how do you care for it in winter?
The pennywort is hardy and can withstand temperatures down to -35 °C, so it can overwinter outdoors. To avoid drought damage, it should be shaded in a sunny location and watered on frost-free days. Potted plants need frost protection for the planter.
Pennigkraut is completely hardy
According to experts, this fast-growing ground cover can tolerate temperatures down to -35 °C when planted. This makes the plant suitable for both mild and harsh areas of our country. It also doesn't need any precautions to protect it from frostbite, so it can be left to its own devices.
Dry damage is possible
Even if the pennywort is hardy, it can still be damaged in winter. There is a risk of frost on dry, sunny winter days. Dry damage to the shoots also occurs if the plant is not protected by a blanket of snow.
If the pennywort is planted in a sunny location, you should shade it in winter. For example, by covering it with a thin layer of brushwood.
Tip
If parts of the pennywort did not survive the winter unscathed, that is no reason to despair. Cut back the plant early in spring. It will sprout again soon after.
Pruning and winter hardiness
Some gardeners are jealous of maintaining a “clean” garden in the fall. The above-ground parts of the pennywort are also cut off. This does not diminish its ability to survive in the approaching cold season. In addition, the plant tolerates cutting all year round.
Ecological reasons, however, suggest postponing pruning until spring. The dense evergreen foliage of the pennywort is a sought-after wintering quarters for many insects.
Care in winter
No major maintenance is required during winter. The only thing that needs to be kept in mind is the water balance. As a swamp plant, pennywort requires moisture all year round. Continue to water as needed, even if only on frost-free days.
Overwintering container specimens
Pennigkraut is not just a sought-after marsh plant for the bank of a garden pond. It also grows decoratively in a balcony box or pot and maintains its long flowering period from May to August.
Planters left outside in winter must be protected from frost. Wrap the container with foil, plant fleece or reed mats and place it on insulating Styrofoam. Its winter location should be as protected as possible. If it is not covered, place the pot slightly at an angle so that excess rainwater can drain away.
