New England aster
Symphyotrichum novae-angliae · Asteraceae
The gardener's calendar
Ideal time to plant new england aster: set it out when the soil is neither frozen nor waterlogged, and water generously as it establishes.
ID card
- Family
- Asteraceae
- Form
- Perennial herbaceous plant
- Foliage
- Deciduous
- Blooming
- August to November
- Adult size
- 0.9 to 1.5 m tall, 0.6 to 0.9 m wide
- Hardiness
- Very hardy (-34°C)
- Exposure
- Full sun
- Origin
- Eastern North America
Care
Exposure
New England aster thrives in direct sunlight, ideally 6 to 8 hours per day. Full sun exposure promotes abundant blooming and plant vigor. Avoid overly shaded areas that would reduce flower production.
Soil and preparation
Plant in well-draining, moderately fertile soil, slightly acidic to neutral. This plant tolerates poor and even dry soils once established. Enrich the planting hole with well-decomposed compost, but avoid excess fertilizer that would encourage foliage at the expense of flowers.
Watering
Water regularly during the first year to ensure good root establishment. Once established, the plant is very tolerant of drought. During active growth, keep the soil slightly moist without waterlogging. Reduce watering late in the season.
Pruning and maintenance
Pinch young stems in spring to encourage a compact, bushy shape. Cut back to 10-15 cm from the soil in late winter or early spring. Remove spent flowers to extend the blooming period and maintain the plant's appearance.
Fertilizing
A light application of balanced fertilizer in spring is usually sufficient. Avoid excess nitrogen which causes legginess and reduces flowering. An annual mulch of compost provides gradual nutrition without chemical intervention.
Diseases and pests
Powdery mildew may appear in humid conditions; ensure good air circulation. Provide proper spacing between plants. Otherwise, this perennial is very resistant to common garden pests and diseases.
Did you know?
New England aster is a true autumn treasure: its intense violet-pink flowers open late in the season and provide a precious food source for monarch butterflies during their migration before their long journey to Mexico. In New England, it has symbolized the arrival of the most beautiful autumn for generations.
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.
Add this plant to my garden →Plants from the same family
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- WormwoodArtemisia absinthium
Tips generated and checked by Viridia — adapt them to your local climate.