- Start the seeds indoors or sow directly outdoors from early spring.
- Sow the seed very thinly over prepared soil and rake in lightly.
- Keep the seeded area consistently moist until germination occurs.
- Seeds will usually germinate within about 14-21 days under good conditions.
- Once seedlings are large enough to handle, thin or transplant them to about 30-45 cm apart.
- Gradually acclimatise any indoor‑sown plants to outdoor conditions before planting out.
- Plant out after all risk of frost has passed into their final flowering position.
- Choose a sunny or partly shaded, this plant tolerates damp soils and is ideal for borders or waterside edges.
- Water regularly during dry spells until established.
- Leave seed heads if self‑seeding is desired.
- Prune or cut back old stems in spring.
Purple Loosestrife (Lythrum Rosy Gem) is a UK-native perennial with upright spikes of rose-purple flowers. Thriving on sunny borders and river margins, it attracts pollinators and adds natural charm to cottage gardens.
