Pallenis spinosa
Pallenis spinosa · Asteraceae
The gardener's calendar
Ideal time to plant pallenis spinosa: set it out when the soil is neither frozen nor waterlogged, and water generously as it establishes.
ID card
- Foliage
- Deciduous
- Flowering
- July to September
- Adult size
- 30 to 60 cm tall
- Growth
- Fast
- Hardiness
- Hardy down to -5 °C
- Origin
- Mediterranean basin
- Soil type
- Well-drained, limy or neutral
Care
Exposure
Place your spiny aster in full sun for optimal flowering. It appreciates warm, sunny locations that are ideal for its vigorous growth. A south or west-facing exposure suits its needs perfectly.
Watering
Water regularly during growth, keeping the soil moist but not waterlogged. Reduce watering in summer once established, as this plant tolerates drought well. In winter, limit water supply.
Soil and planting
Prefer well-drained, limy or neutral soil that is slightly poor. Avoid heavy clay soils that cause root suffocation. Adding gravel or sand improves drainage if necessary.
Pruning and maintenance
Remove faded flowers regularly to extend flowering. In late winter or early spring, cut back the plant lightly to encourage better branching. Remove dead or damaged stems.
Fertilizing
A moderate application of balanced fertilizer in spring is quite sufficient. This Mediterranean plant doesn't appreciate excessive fertility. Avoid excess nitrogen, which promotes foliage at the expense of flowers.
Diseases and pests
The spiny aster is generally robust and not very susceptible to diseases. Watch for powdery mildew in case of excessive humidity or poor ventilation. Spider mites may occasionally appear in very dry conditions.
Did you know?
The spiny aster gets its name from the spines that dot its leaves and flower bracts, giving it a characteristically bristly appearance. This Mediterranean plant was long used in dry and rocky gardens of warm regions, and is today rediscovering growing interest among sustainable floriculture enthusiasts in light of climate change.
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.