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| Lythrum | Common name; Purple loosestrife |
A hardy herbaceous perennial, that is extremely adaptable to a wide range of conditions and will grow almost anywhere except in full shade.
They grow to around 600-750mm (24"-30") high, and flower from late June until October.
Week 14; Sow in pots/trays of seed compost and germinate at a temperature of 16°C (60°F)
n.b. Named varieties do not come true from seed.
Prick out the seedlings when large enough to handle in 75mm (3") pots of potting compost and grow on in a coldframe until planting out time.
Week 18; Take 75mm (3") long basal cuttings, and insert in pots of 50-50 in equal parts (by volume) peat and sand.
Place in a coldframe to root in a cold frame.
When rooted, treat as seedlings
Week 40; Plant out 500mm (18") apart in ordinary garden soil in sun or semi-shade
n.b. These plants will thrive near water, in a damp / wet semi-shaded situation.
Week 42; Cut back plants to ground level.
Plants can also be divided at this time.
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