30 - 40 cm
July - August
well drained, sandy, moderately fertile
neutral - alkaline
Knautia is a genus of 9 species in the family, Capryfoliaceae. One species is native to iceland (*).
Division in spring.
Seed - sown in January - February.
Seed just covered and stored at 20°C (68°F) until germination, which can be slow.
Grows best in well drained, alkaline soil in a sunny position. Native to a few places in Iceland.