About
Lythrum hyssopifolia, the grass poly, is a slender, annual or short-lived perennial with narrow, grass-like leaves and small, pink, six-petalled flowers in the leaf-axils in summer. A rewarding native wildflower for a sunny, moist border or wild garden.
About the genus
Lythrum, the loosestrifes, are annuals or herbaceous perennials with simple, opposite leaves and small, star-shaped, pink or purple flowers in leafy racemes in summer. Popular ornamental plants for moist borders and pond margins.
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.