Centaurea macrocephala

Germination

Sow indoors. Sow 10mm deep into moist well-drained seed compost. Propagate at 15-20°C. Normally germinates in the dark. Germination takes 21-28 days. Transplant seedlings once large enough to handle to 8cm pots. Over winter under glass. Plant out following spring. Can sow direct into prepared , raked soil 3mm deep in drills 30cm apart. Thin to 15cm spacing when large enough to handle.

Growing

Fertilise monthly, water infrequently.

Cultivation

Deadhead regularly to extend the flowering period. Once established the plant likes being divided outside of the flowering season.