Astilbe arendsii ‘Rhapsody’ produces elegant, feathery flower plumes in a refined mixture of cream, blush pink, rose and rich carmine. Reaching approximately 80 cm tall, this hardy perennial is perfect for bringing height, colour and soft texture to shaded borders, woodland gardens and large containers. Its long, slender plumes also make beautiful cut flowers for romantic summer arrangements. Astilbe thrives in rich, moisture-retentive soil and is an excellent choice for those cooler, lightly shaded areas where many flowering plants struggle.
When to Sow: Feb–Apr & Jun - Jul
HOW TO SOW:
Sow the pelleted seeds onto the surface of moist, free-draining seed compost. Press them gently into place but do not cover, as light assists germination. Keep at 21–24°C with high humidity and ensure the compost remains consistently moist. Germination generally begins within 2–4 weeks.
Once seedlings are established, gradually reduce the humidity and grow them on at approximately 18–20°C. Transplant individually when large enough to handle and continue growing in bright but lightly shaded conditions.
Harden off gradually before planting outside in rich, moist but well-drained soil. Plants require a Time of winter cold to initiate flowering and will generally bloom the summer following sowing.
Classification: Hardy Perennial
Expert Level: Requires Some Experience
Germination Time: 2–4 Weeks
Site: Partial Shade / Shade
Soil Type: Rich, fertile, moisture-retentive soil
Soil Acidity: Acid / Neutral
Moisture: Moist but well-drained
Care: Do not allow plants to dry out, particularly during warm weather. Apply a generous mulch of well-rotted organic matter in spring to retain moisture. Remove faded flower stems or leave them standing for attractive winter interest, then cut old growth back before new shoots emerge in spring. Divide established clumps every few years to maintain vigour.
Use: Cut Flower Gardens, Shaded Borders, Woodland Gardens, Cottage Gardens, Large Containers, Pondside Planting
Harvesting: Cut when approximately half of the tiny flowers on each plume have opened. Harvest during the coolest part of the day and place the stems immediately into clean water.
Days to Maturity: Approximately 10–16 Months; flowering follows winter vernalisation
Flowering Time: June–August
Vase Life: Approximately 5–7 Days
Height: 80 cm
Plant Spacing: 40–50 cm