Is the Aster Novi belgii hardy? - Interesting facts about frost hardiness

The smooth leaf aster makes the same demands on the soil and maintenance as pillow asters and is just as hardy as these. However, with some precautionary measures you can make it easier for the aster to overwinter. This is particularly recommended for young plants.

How do I prepare the New Belgian Aster for winter?

You can prune the New Belgian aster in spring as well as in autumn; if you have decided to prune in autumn, then cover the aster for the winter. How to protect the plant from frost and cold wind.

A layer of leaves or brushwood is sufficient as winter protection for the root ball. If you use compost instead, you can give your aster a good start-up aid for next spring. A pruning in spring is recommended, especially in the first year. In doing so, remove any shoots that may have frozen.

How do I care for the New Belgian Aster in winter?

The Aster novi belgii does not need any special care in winter. An older aster can withstand light frost even without winter protection, cold wind can cause damage. Early snowfall is ideal because the snow provides your aster with optimal protection from wind and even from drying out.

Once you have planted your New Belgian aster in the tub, it is best to move the plant to winter quarters. This does not necessarily have to be frost-free, the aster can withstand temperatures around freezing point quite well. In frost-free wintering, however, it should be watered a little regularly.

If the aster is left outside in a planter during the winter, protect the roots from frost, for example with an old blanket or bubble wrap that you wrap around the tub.