LINUM Flowering Flax (From linon, flax) There are several annual Flaxes, including Linum grandiflorum (coccineum), the Scarlet Flax, about a foot tall, with wide-open, glossy flowers, and L. usilatissimum, the Flax of commerce which bears blue flowers, and grows 3 feet tall. Where to Plant. The Flax is truly beautiful and forms clumps in the border where the glowing flowers […]