Alphabetical Plant Listing

Lythrum salicaria (Purple Loosetrife)

Purple Loosetrife


Spectacular when in full bloom, Purple Loosestrife (Lythrum salicaria) is a vigorous, upright perennial enjoying an extremely long bloom season from early to late summer. It features pink, purple or magenta flowers in dense spikes, up to 18 in. long (45 cm) held atop lance-shaped leaves.

  • Typically 2-4 feet tall (60-120 cm) and 24-28 in. wide (60-70 cm), Purple Loosestrife thrives in average, medium to wet soils in full sun to part shade.
  • A welcomed addition to beds, borders, this is an ideal candidate for bog gardens and along ponds and streams.
  • The problem with this plant is that it is so invasive in North America that it can rapidly colonize wet areas. One mature plant can produce more than 2 million seeds annually. Seeds are easily dispersed by water and in mud adhered to aquatic wildlife, livestock and people. Some cultivars have been marketed as being sterile such as 'Morden Pink', 'Morden Gleam' or 'Dropmore Purple' but there seems to be evidence that these cultivars can produce highly fertile seed if grown with other cultivars or wild loosestrife.
  • Find where this species is invasive in the United States.
  • Discover beautiful U.S. native plant alternatives.
  • Deadhead after flowering to prevent self-seeding. Plants may be sheared to the ground after blooming. If done in midsummer, new foliage will emerge in 2 weeks with a potential fall rebloom.
  • Native to Europe and Asia.

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Requirements

Hardiness 4 – 9
Heat Zones 1 – 9
Plant Type Perennials
Exposure Full Sun, Partial Sun
Season of Interest Summer (Early,Mid,Late)
Height 2' – 4' (60cm – 120cm)
Spread 2' – 3' (60cm – 90cm)
Spacing 24" – 30" (60cm – 75cm)
Water Needs Average, High
Maintenance Low
Soil Type Clay, Loam
Soil pH Acid, Alkaline, Neutral
Soil Drainage Moist but Well-Drained, Moisture Retentive
Characteristics Showy
Native Plants United Kingdom
Tolerance Clay Soil, Deer, Wet Soil
Garden Uses Banks and Slopes, Beds and Borders, Bog Gardens, Patio and Containers, Ponds and Streams
Garden Styles City and Courtyard, Coastal Garden, Prairie and Meadow

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Botanik Foto

While every effort has been made to describe these plants accurately, please keep in mind that height, bloom time, and color may differ in various climates. The description of these plants has been written based on numerous outside resources.


Requirements

Hardiness 4 – 9
Heat Zones 1 – 9
Plant Type Perennials
Exposure Full Sun, Partial Sun
Season of Interest Summer (Early,Mid,Late)
Height 2' – 4' (60cm – 120cm)
Spread 2' – 3' (60cm – 90cm)
Spacing 24" – 30" (60cm – 75cm)
Water Needs Average, High
Maintenance Low
Soil Type Clay, Loam
Soil pH Acid, Alkaline, Neutral
Soil Drainage Moist but Well-Drained, Moisture Retentive
Characteristics Showy
Native Plants United Kingdom
Tolerance Clay Soil, Deer, Wet Soil
Garden Uses Banks and Slopes, Beds and Borders, Bog Gardens, Patio and Containers, Ponds and Streams
Garden Styles City and Courtyard, Coastal Garden, Prairie and Meadow

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