Gooseneck loosestrife is an East Asian perennial whose dense spikes of tiny white flowers arch over to one side like a goose's neck. In the US it is a popular garden plant, known for spreading fast by underground stems, and it has escaped from gardens in parts of New England.

Appearance

Growth form
An upright perennial 2–3 ft (60–100 cm) tall that spreads 2–4 ft (60–120 cm) wide by .
Flowers
Tiny white, star-shaped flowers about ½ inch (1.2 cm) across crowd onto arching spikes roughly 4–9 in (10–22 cm) long in descriptions of wild plants, and up to 12–18 in (30–45 cm) in garden descriptions. They make good cut flowers.
Flowering time
Blooms from late spring through summer, roughly May to August in North Carolina.

Where it lives

Typical habitats
  • Gardens
  • Moist woodland edges
  • Grassy slopes
Range
Native to China, Japan, Korea, and the Russian Far East. In the US it is a garden plant that has escaped cultivation in parts of New England (for example Connecticut, Maine, and Massachusetts), usually in disturbed places such as roadsides, fields, and old garden sites.
Preferred conditions
In its native range it grows on damp woodland margins, wet ravines, and sunny grassy hills and mountain slopes.
Flowering

Flowers May–Aug

Flowers May–Aug

Growing it

Care
Hardy in USDA zones 3–8. Grows in full sun to part shade and likes rich, moist soil. It spreads aggressively, so gardeners plant it inside edging or hardscape and divide it in spring. It spreads less in dry shade but also flowers less there.
Propagation
Spreads mainly by rhizomes and can also come up from seed.

Conservation

IUCN Red List
NENot EvaluatedNot yet assessed

Culture and stories

Culture and stories
  • In China, the young shoots and leaves are eaten as a vegetable.

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Gooseneck Loosestrife (Lysimachia clethroides) — identification, habitat & look-alikes | Moeyo