Tufted Loosestrife

(Lysimachia thyrsiflora)

Tufted Loosestrife (Lysimachia thyrsiflora)

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Estimated Native Range
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Summary

Lysimachia thyrsiflora, commonly known as Tufted Loosestrife, is a deciduous perennial herb native to wetlands such as marshes, swamps, and wet meadows across the Northern Hemisphere, including the Eastern USA, Canada, and parts of Europe and Asia. It typically grows to a height of up to 80 centimeters and features upright stems with lance-shaped leaves. From late spring to midsummer, it produces dense clusters of star-shaped, yellow flowers, sometimes with purple spotting, which are attractive to pollinators such as bees and butterflies.

Tufted Loosestrife is valued for its ability to thrive in wet conditions and is often used in water gardens, bog gardens, and along the edges of ponds. It provides a bright splash of color in areas where other plants may struggle. In cultivation, it prefers part shade to full sun and requires aquatic or consistently moist soil conditions. While it is not overly demanding in terms of soil fertility, it does best in soils with standing or slow drainage. Gardeners should be aware that in ideal conditions, Lysimachia thyrsiflora can spread vigorously and may require management to prevent it from becoming invasive.CC BY-SA 4.0

Plant Description

  • Plant Type: Herb
  • Height: 0.5-3 feet
  • Width: 0.5-0.8 feet
  • Growth Rate: Moderate
  • Flower Color: Yellow
  • Flowering Season: Spring
  • Leaf Retention: Deciduous

Growth Requirements

  • Sun: Part Shade, Full Sun
  • Water: Aquatic, High
  • Drainage: Standing, Slow

Common Uses

Bee Garden, Bird Garden, Butterfly Garden, Deer Resistant, Hummingbird Garden, Low Maintenance, Rabbit Resistant, Water Garden

Natural Habitat

Wetlands such as marshes, swamps, and wet meadows across the Northern Hemisphere

Other Names

Common Names: Swamp Loosestrife, Tufted Yellow-Loosestrife, Water Loosestrife, Tufted Yellow Loosestrife, Yellow Loosestrife, Dusk-Fredløs, Strauß-Gilbweiderich, Straußblütiger Gilbweiderich, Terttualpi, Lysimaque Thyrsiflore

Scientific Names: , Lysimachia thyrsiflora, Naumburgia thyrsiflora, Naumbergia thyrsiflora, Naumburgia guttata, Lysimachia capitata, Lysimachia capitellata, Lysimachia kamtschatica, Lysimachia subcapitata, Lysimachia thyrsantha

GBIF Accepted Name: Lysimachia thyrsiflora L.