About
Isatis iconia is a biennial or short-lived perennial related to woad, producing the characteristic arrow-shaped leaves and loose panicles of small, yellow flowers of the genus. A rewarding and ornamental plant for a sunny border.
About the genus
Isatis are annuals, biennials and perennials of waste ground and dry, rocky areas, with ovate to oblong basal leaves and arrow-shaped stem leaves. Loose racemes or panicles of small, yellow flowers are attractive to bees. Best known for Isatis tinctoria, the source of the ancient blue dye woad.
Plant details
Suggested usesBedding, containers, hanging baskets.
Care notes
CultivationPlant out after last frost in fertile, well-drained soil.
PruningDeadhead regularly to prolong flowering.
PropagationGrow from seed sown in spring.
Pest resistanceGenerally pest-free. Monitor for common garden pests.
Disease resistanceGenerally disease-resistant. Ensure good air circulation.