Centaurea nigra

Germination

Sow indoors. Sow 2mm deep into moist well-drained seed compost. Propagate at 15-20°C. Normally germinates in the dark. 7-14 days for germination. Transplant seedlings once large enough to handle to 8cm pots. Can sow direct into prepared, raked soil 3mm deep in drills 30cm apart. Thin to 15cm spacing when large enough to handle.

Growing

Does not like to be too crowded.

Cultivation

No pruning required. This wild flower requires little attention. self-seeds readily and can become invasive.