Lythrum salicaria

Purple loosestrife

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Key information

Plant type


Flower colour






Skill level


Lythrum salicaria

Plant details

Purple loosestrife, Lythrum salicaria, is a tall-growing wildflower that grows naturally on banks of streams and around ponds. It has strong, upright stems, topped in summer with long, poker-like heads of bright purple-red flowers. Its flowers are extremely attractive to bees and butterflies.

For best results grow Lythrum salicaria in moist soil, such as around the edge of a pond. Plants shouldn't need staking but deadhead splent blooms regularly to maintain a tidy appearance, and divide clumps every three to five years to avoid congestion. Lythrum salicaria works well grown alongside other moisture-loving plants such as inula.

Family: Lythraceae

Genus: Lythrum

Species: salicaria

Plant type: Marginal

Flower colour: Purple

Foliage colour: Mid-green

Feature: Flowers

Sun exposure: Full sun

Soil: Clay/heavy, Moist, Boggy

Hardiness: Hardy

Skill level: Beginner

Height: 200cm

Spread: 60cm

Time to plant seeds: March to April

Time to divide plants: March to May

Flowering period: June to August

Reader reviews


Again, DO NOT PLANT this plant in most of the U.S.
In Iowa and several other states it is against the law. It is invasive in wetland areas and freely spreads. BAD.. and a tad irresponsible to not mention that here.. but that is my opinion.


Why mention it. This is a British website

Charlie Gregory

Great plant for attracting bees and butterflies

Sarah Furnell

I'm looking forward to sowing these seeds tomorrow hope I get a nice few plants


Another absolute thug. Difficult to dig up it appears on some of the verges here in Dorset as well. If you have a few damp areas,plant this at your peril.

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