Linum lewisii is a comparable U.S. native plant (Figure 1). In general, flax is an annual or short-lived, semi-evergreen perennial forb, sometimes semi-woody at base with attractive flowers ranging from white to blue to yellow to red in color. The flax species with yellow to red flowers can be toxic to livestock.

Sow seed from mid-April through to the end of June for blooms in late summer. Broadcast seed and cover with a light sifting of soil. Water regularly to encourage germination. When grown in a suitable location, blue flax self-seeds readily but has difficulty establishing under competition from other plants.

Naturalizing Blue Flax is loved for its vivid, cornflower-blue, saucer-shaped flowers. It may bloom the first year if started early enough in the spring.

Strikingly beautiful in bloom, Linum perenne (Perennial Flax) is a semi-evergreen perennial forming tufts of narrow blue-green leaves and profuse sky blue saucer-shaped flowers, 1 in. across (2.5 cm), over a long season. ... They are borne atop wiry stems along with great quantities of nodding flower buds.. . . . .364011235436!]0000000000000009783314147022!]