- Few varieties are sensitive to frost
- Suitable materials for wintering outdoors
- Overwinter asters outside in pots
Autumn time means preparation time. Now it's time to winterize the plants outside so that they don't freeze to death from ice and snow. What about asters? How are they overwintered?

Few varieties are sensitive to frost
Most aster species are sufficiently hardy - often even down to -45 °C in sheltered locations. But some specimens such as chrysanthemums, which also belong to the aster family, are more sensitive and should therefore be provided with a protective layer in the root area in late autumn outdoors.
Suitable materials for wintering outdoors
For example, the following materials are suitable as winter protection for asters, if they are applied in a thick layer over the root area:
- Compost,
- bark mulch,
- leaves
- brushwood
- fir branches
- spruce branches
- straw
- hay
Overwinter asters outside in pots
Is your aster in a pot on the balcony or terrace, for example? Then you should definitely not put them in a warm house in winter. A sheltered house wall is a suitable location for the winter. It is also advisable to cover the root area/pot with a jute sack (€10.99) or fleece.
If the aster is protected from rain, it needs to be watered lightly from time to time. The emphasis is on easy. Water only enough to keep the soil fresh and not dry out. You should refrain from fertilizing at all. In the spring, simply cut down the old parts of the plant.
tips
The shoots themselves offer the aster the best winter protection. They protect you from severe frost and winter wetness. Therefore, only cut them off in the spring!