- Sowing: Easy to start in spring
- Root division: propagation and rejuvenation
- Cuttings: A rather unusual method
Asters always look good with their colorful flowers. In addition, they are undemanding, represent a valuable bee pasture in autumn and are also suitable as cut flowers. In any case, there are enough reasons to multiply them…

Sowing: Easy to start in spring
Direct sowing outdoors is possible without any problems. If, on the other hand, you plan to cultivate the asters in pots, for example on the balcony or roof terrace, you can also sow them in pots.
How it works:
- Time: April
- Sow seeds 1 cm deep
- Sow 2 seeds per planting hole
- Keep substrate moist
- ideal germination temperature: 18 °C
- Germination time: 2 to 4 weeks (depending on temperature)
- from mid-May and by the beginning of June at the latest, plants that have been brought forward should be brought outside
Root division: propagation and rejuvenation
A second simple propagation method is the division of the plant or its root ball. This is also recommended to give the aster new strength. As a result, it blooms richer again. You should therefore divide your aster every two to three years!
You should start dividing after flowering in late autumn or alternatively in early spring. Important: Only use asters that are big enough for this! The plant should be at least 2 years old and healthy!
The root ball is first dug up. Then it is divided with a knife or a spade. Each section should have at least 2 green stalks. Simply cut back injured roots. Then it's just a matter of planting properly.
Cuttings: A rather unusual method
This method is rather less common for asters:
- When: late summer
- Cut shoots 10 cm long
- remove lower leaves
- stick in potting soil
- keep moist and cover with a plastic bag
- hibernate the first winter indoors
tips
You should prefer the annual summer aster at home in March so that it blooms in the same year.