Purple Loosestrife Seeds (Lythrum salicaria)

A striking perennial, Purple Loosestrife produces tall spikes of vibrant purple flowers throughout summer. Hardy and long-flowering, it adds vertical interest and color to borders, wetlands, and naturalistic garden plantings, attracting bees and butterflies.

What Makes It Special

• Tall spikes of vivid purple flowers

• Hardy, long-lasting perennial with dramatic vertical presence

• Attracts pollinators, supporting wildlife-friendly gardens

Key Features

• Botanical name: Lythrum salicaria

• Hardy perennial

• Height: 100–150 cm (3–5 ft)

• Bloom time: Summer

Ideal For

• Garden borders and wetland-style plantings

• Naturalistic and cottage-style gardens

• Pollinator-friendly landscapes

Sowing

• Sow indoors Feb–Apr or outdoors Mar–May

• Cover lightly with soil and keep moist

• Germination: 14–28 days at 15–20°C

• Thin seedlings 30–40 cm apart

• Flowers in the first or second season after sowing