Erigeron sumatrensis
Erigeron sumatrensis · Asteraceae
The gardener's calendar
Ideal time to plant erigeron sumatrensis: set it out when the soil is neither frozen nor waterlogged, and water generously as it establishes.
ID card
- Common name
- Sumatran Fleabane
- Family
- Asteraceae
- Type
- Annual or biennial herbaceous plant
- Adult size
- 30 to 100 cm in height
- Flowering
- July to October
- Foliage
- Deciduous
- Origin
- Tropical Asia (Sumatra, Malaysia)
- Hardiness
- Frost-tender, annual in temperate regions
Care
Exposure
This plant prefers full sun exposure for optimal flowering. It also tolerates partially sunny locations, although flower production will be less abundant. Avoid areas that are too shaded.
Watering
Keep the soil regularly moist, especially during the growth and flowering period. Moderate watering is sufficient, avoiding waterlogging which promotes rot. In case of prolonged drought, increase watering frequency.
Soil
Sumatran fleabane appreciates well-drained soil that is slightly rich in organic matter. Standard potting mix added with compost works perfectly. It adapts to different soil types but prefers conditions that are not too compacted.
Fertilizer
Applying balanced fertilizer or one slightly rich in phosphorus once or twice a month promotes beautiful flowering. Reduce applications in late summer. Avoid excess nitrogen which would extend growth at the expense of flowers.
Pruning and training
Pinch young plants to encourage branching and a denser shape. Remove spent flowers regularly to extend flowering. Light pruning at the beginning of the growing cycle encourages better branching.
Diseases and pests
This plant is generally robust but can be affected by mildew in very humid conditions. Ensure good air circulation and avoid wetting the foliage. Aphids and whiteflies can occasionally infest it indoors.
Did you know?
Erigeron sumatrensis, originating from tropical regions of Southeast Asia, has naturalized in many parts of the world as a weed. Its name 'Erigeron' literally means 'old man of spring' in Greek, referring to the downy appearance of its fruits and seeds borne by feathery bristles, which resemble graying hair.
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.