European Michaelmas-daisy
Aster amellus · Asteraceae
📷 Robert Flogaus-Faust · CC BY 4.0
The gardener's calendar
Ideal time to plant european michaelmas-daisy: set it out when the soil is neither frozen nor waterlogged, and water generously as it establishes.
ID card
- Foliage
- Deciduous
- Flowering
- August to October
- Adult size
- 60 to 80 cm tall, 40 to 60 cm wide
- Growth
- Moderate
- Hardiness
- Very hardy (-15°C)
- Origin
- Central and southern Europe
- Soil type
- Well-drained soil, limestone tolerated
- Exposure
- Full sun
Care
Watering
Water regularly during the spring and summer growing period, especially during prolonged dry spells. Once established, Aster amellus is drought-tolerant. Reduce watering in fall and winter, keeping the soil slightly moist without waterlogging.
Exposure
Plant in full sun to ensure generous flowering and vibrant flower colors. A minimum of 6 hours of direct light per day is recommended. In partial shade, the plant will become leggy and flower less abundantly.
Soil
Aster amellus prefers well-drained, fertile soil enriched with organic matter at planting time. It tolerates limestone soils and even slightly poor soils. Avoid heavy, compacted soils that promote stagnant moisture and fungal diseases.
Pruning and maintenance
In late winter or early spring, cut stems back to 15-20 cm from the ground to promote a compact, bushy shape. Remove faded flowers regularly during flowering to encourage new blooms. Light pinching in May helps densify branching.
Fertilizer
Apply balanced fertilizer in spring when growth resumes. An additional application in early summer supports abundant flowering. Avoid excess nitrogen, which would favor foliage at the expense of flowers.
Diseases and pests
Aster amellus is generally robust but may be susceptible to powdery mildew in warm, humid weather. Ensure good air circulation by spacing plants well and avoiding foliage watering. Inspect foliage regularly and intervene quickly if you notice suspicious symptoms.
Did you know?
Aster amellus, also called fall aster or autumn daisy, was already cultivated in ancient Roman gardens. Its scientific name 'amellus' comes from the Latin of ancient naturalists, testifying to a horticultural tradition spanning two millennia. Today, it remains an essential choice for autumn compositions to extend the colors of the late garden.
Where to buy it
Plant in spring or early autumn, avoiding spells of intense heat. Pick a plant with healthy foliage and roots that are not exposed. Best time: March, April, May, September.
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Tips generated and checked by Viridia — adapt them to your local climate.