Linum perenne is also known as Linum sibricum, Perennial Flax, Blue Flax, Lint Bells, Prairie Flax. It is a semi-evergreen perennial from the Linaceae family of plants. It is native to Europe. Linum perenne is heat-tolerant, ideal for dry and hot landscape locations. It grows from 10 to 50cm or 4 to 20in.
Linum perenne has saucer shaped blue flowers about 1in or 2.5cm. It flowers in spring and summer for about 8 to 12 weeks, depending if it is in the sun or shade. Linum perenne flowers last only one day, but it has so many flowers that it creates blanket of blue flowers as a ground cover. Plant Linum perenne in the full sun in well-drained soil. Propagate from seed or cuttings. They self-seed and are easy to grow. Usually it is disease and pest-free but watch out for aphids, snails and slugs.