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Lythrum salicaria

Purple loosestrife

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From 4 ratings

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Key information

Plant type


Flower colour






Skill level


Lythrum salicaria

Plant details

Purple loosestrife makes a tall 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. Plants look tidier if dead heads are removed occasionally. They do not need staking but, because plants can be rather vigorous, they need dividing every few years to keep within bounds. Team with other moisture-loving plants such as inula in a damp border or pondside.

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

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