Cynoglossum officinale

Germination

Sow directly where it is to flower just before last expected frosts. Sow 5mm deep into prepared soil which has been raked to a fine tilth. Seed should be covered as it germinates in darkness. Ideal temp. 18-22°C. Germination takes 7-21 days approx. Thin seedlings as required. Can be started indoors if preferred 6-8 weeks prior to last frost date with seedlings moved outside after danger of frost has passed. Can be sown directly in autumn for flowering the following year.

Growing

Prefers a deep, fertile soil, which is moist but well-drained in full or partial sun. Ideally offer afternoon shade form hot sun. Hardy to -15 to -10°C.

Cultivation

Will self-seed freely. Deadhead if you do not want volunteer seedlings next year. Best treated as an annual. Pull and compost the plant after flowering ceases.