The New Belgian or smooth-leaf aster (bot. Aster novi belgii) is one of the tall-growing asters. Genetically, it is closely related to the rather small cushion aster (bot. Aster dumosus). Accordingly, their needs are quite similar.
The Aster Novi belgii is hardy
The smooth-leaf aster has the same soil and care requirements as the cushion aster and is just as hardy as them. With a few precautionary measures, however, you can make it easier for the aster to overwinter. This is particularly recommended for young plants.
How to prepare the New Belgian Aster for winter?
You can prune the New Belgian Aster both in spring and in autumn. If you have decided to prune in autumn, then cover the aster over 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. However, if you use compost instead, then give your aster a good starting aid for next spring. A pruning in the spring is recommended, especially in the first year. Then remove any frozen shoots.
How do I care for the New Belgian Aster in winter?
In winter, the Aster novi belgii does not require any special care. An older aster even survives light frost without winter protection, cold wind can do more damage. Early snowfall is ideal, because the snow optimally protects your Aster from the wind and even from drying out.
If you have planted your New Belgian Aster in a bucket, then it is best to move the plant to winter quarters. This does not necessarily have to be frost-free, the aster withstands temperatures around the freezing point quite well. However, if it is frost-free during the winter, it should be watered a little regularly.
If the aster is in a planter outside over the winter, protect the roots from frost, for example with an old blanket or bubble wrap that you wrap around the bucket.
The essentials in brief:
- relatively hardy
- Winter protection recommended, especially for young asters
- Never remove snow
- Be sure to protect potted plants from frost
tips
The Aster novi belgii is hardy in principle, but can definitely use a little winter protection.