Thrives in a poor dry soil in full sun. Prefers a humus-rich moisture-retentive soil. Plants are usually annual, but are sometimes short-lived perennials. The whole plant smells of pine trees when crushed.

None known

Seed - sow spring in situ. Germination can be erratic.

Very local in sandy and chalky arable fields and in open habitats in chalky grassland in southeastern England.