How to plant
When to plant
Plant Bletilla rhizomes in spring once the soil has warmed and all risk of frost has passed. In mild regions, they can also be planted in early autumn if they have time to root before winter.
Where to plant
Choose a partially shaded spot with morning sun or dappled light. Avoid deep shade and harsh midday sun. Bletilla thrive in sheltered borders, woodland edges and containers in semi-shade.
Preparing the soil
Loosen the soil to 20–25 cm and mix in compost or leaf mould. The soil should be humus-rich, moist but well-drained. Improve heavy clay with fine bark or grit, and enrich very sandy soil with extra organic matter.
Preparing the rhizomes
Trim away any soft or damaged sections. If the rhizomes feel dry, soak them in lukewarm water for 15–20 minutes before planting to rehydrate them gently.
Planting the rhizomes
Plant rhizomes 5–7 cm deep, laid horizontally with buds facing upward if visible. Space them 20–30 cm apart to allow clumps to form naturally. Firm the soil gently and water well after planting.
After planting
Keep the soil evenly moist while plants establish. Apply a light mulch of compost or leaf mould to help retain moisture and protect young shoots.
During growth
Water regularly during dry periods and feed lightly with a balanced fertilizer once or twice during the growing season. Support flower stems in windy areas if necessary.
After flowering
Cut back faded flower spikes but leave the foliage to die down naturally so it can feed the rhizomes. In colder climates, mulch well in late autumn for extra winter protection.
Extra tips
Bletilla are ideal for woodland-style borders and lightly shaded gardens. Avoid winter waterlogging, especially on heavy soils. They also do well in containers—just protect pots from hard frost. Mature clumps can be gently divided every 3–4 years to spread them or rejuvenate growth.
