General Description: Hoary alyssum is an upright annual, biennial or short-lived perennial herb growing about 1 to 3.5 feet tall. Plants are covered in stellate hairs causing it to look silvery-gray in color.
Flower Description: Flowers are in simple or branched clusters (racemes) and bloom from the bottom up. Flower petals white, two times longer than sepals and are deeply cleft. Each flower has 6 stamens.
Leaf Description: Plants have basal and stem leaves. Basal leaves are oblanceolate, 0.75 to 2 inches long by 0.2 to 0.4 inches wide, and have smooth margins. Leaves gradually reduce in size moving up the stem with alternate leaf arrangement.
Stem Description: Stems are generally unbranched near base and branched above.
Fruit/Seed Description: Seeds are in somewhat inflated pod-like structures called silicles that are oval shaped and around 0.25 inches long. Seeds are round, brown and have narrowly winged margins.
Plant Protection Products