Flower
Red Astilbe
Astilbe x arendsii (red cultivars)
Red astilbe is a shade-loving perennial with feathery plumes of red flowers in summer and attractive fern-like foliage. It thrives in moist, cool conditions and adds vibrant color to shaded gardens.
Partial sun
Regular
Rich, moist, well-draining soil high in organic matter
Easy
Yes
Ornamental
- 1Plant in spring or fall in partial shade; avoid full sun especially in hot climates.
- 2Keep soil consistently moist but not waterlogged; mulch to retain moisture and keep roots cool.
- 3Divide clumps every 3-4 years in early spring to maintain vigor.
- 4Deadhead spent flowers to keep plants tidy, though seed heads add winter interest.
- 5Feed with balanced fertilizer in spring and apply compost annually.
Season
Blooms in early to mid-summer; plant in spring or fall for best establishment in temperate zones.
Powdery mildew
Ensure good air circulation and avoid overhead watering; remove affected leaves.
Spider mites
Keep foliage moist with regular watering; spray with water or insecticidal soap if severe.
Leaf scorch
Move to shadier location or water more frequently; browning edges indicate insufficient moisture or too much sun.
This plant guide is generated by AI from publicly available horticultural knowledge. Before eating any part of a plant, cross-check with a trusted local source or grower. Toxicity and edibility vary by variety, growing conditions and individual sensitivity.
Where to source
Get growing in United Kingdom
Thompson & Morgan
Thompson & Morgan offers red astilbe seeds suited to cool, moist conditions typical of northern UK gardens.
BrowseCrocus
Crocus supplies established red astilbe pot plants that establish quickly in Barrhead's cool, damp climate.
BrowseSuttons
Suttons provides red astilbe seeds adapted to thrive in northern UK's cooler temperatures and reliable rainfall.
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