Flowering Flax

Flowering Flax (Linum grandiflorum) is a slender, upright annual native to North Africa, grown for its vivid carmine-red five-petalled flowers that reach up to 3 cm across. Plants grow 40–50 cm tall with fine, waxy lance-shaped leaves, giving the whole plant an airy, graceful appearance. It performs best in full sun and tolerates light frost, making it suitable for Nordic gardens. It is most striking when grown in dense groups.

Growing

Direct-sow seeds 1 cm deep in a sunny, well-drained spot once the soil has started to warm slightly in early spring — even a soil temperature of around 5 °C is sufficient, as the plant tolerates frost. Sow thinly and thin seedlings to 10 cm apart within rows spaced 30 cm apart. Flowering Flax does not transplant well; sow it where it is to grow. Successive small sowings extend the flowering period.

Care

Water moderately; established plants are fairly drought-tolerant and dislike waterlogged roots. No feeding is needed on average garden soil — excess nitrogen encourages leaf growth at the expense of flowers. Deadhead spent blooms to prolong flowering, or leave seed heads to encourage self-seeding for the following year. No staking required due to the sturdy, branching stems.

Harvest

Cut flower stems for the vase when the first buds on a stem begin to open, as individual flowers are short-lived. For dried arrangements or seed saving, allow seed capsules to ripen fully on the plant until they turn brown and rattle. Collect seed heads before they split to avoid seed loss.

In the kitchen

Flowering Flax is grown purely as an ornamental cut flower. The blooms make striking additions to fresh flower arrangements, particularly effective in naturalistic or cottage-garden-style bouquets alongside grasses and other airy annuals.

Storing

Fresh-cut stems last 3–5 days in a clean vase with water changed daily. Dried seed heads keep indefinitely in a dry, dark location. Saved seeds remain viable for 2–3 years when stored in a sealed envelope or container in a cool, dry place.