BLUE FLAX / Prairie Flax - One of the easiest native wildflowers to grow from seed, Blue Flax adds sky blue blooms to the early season garden. Growing to be only 18-30” tall, this perennial is perfect for the front of the meadow or a small space garden. Not picky about soils. Blue Flax will grow in almost any sunny spot but will tolerate part shade. The flax family is used in the manufacture of linseed oil and fabric. This species is important in Native American lore, always noted for its beauty and utility. 1000+ Seeds per order. linum perrene. Perennial. Full sun - Tolerates some shade. Early Spring / Fall Soil temp 65F+. SOW- Lightly scatter and lightly cover 1/8" deep. Keep moist. Germination - 20/30 days. Thin to about 10"-12". Medium / Light water. Height 24" - 30". Flowers are sky blue. Blooms 2nd year and beyond, spring through summer.