WHERE’S WILDLIFE • WILDFLOWER FIELD GUIDE

Garden Loosestrife

Lysimachia vulgaris

Pronounced (approximate): ly-sih-MAK-ee-uh vul-GAIR-is

An upright yellow-flowered perennial that spreads by rhizomes.

Garden Loosestrife (Lysimachia vulgaris): field photograph. Tap the photo to open the gallery.

NON-NATIVE • NORTH AMERICA

At a glance

Family Primulaceae
Life cycle Perennial
Blooms Summer
Height 3 to 6 feet
Habitat Moist meadows, wetland margins, shores and garden escapes

Common names: Garden Loosestrife · Garden Yellow-loosestrife

Bloom timing varies with latitude, weather and local conditions.

Sightings map

Explore reported observations. Sightings are not a complete range map.

How to recognize it

Key identification clues

  • Yellow five-lobed flowers cluster at stem tips and upper leaf axils.
  • Lance-shaped leaves occur opposite each other or in whorls.
  • Stems are hairy; sepals commonly have reddish-brown edges.

Where and when to look

Moist meadows, wetland margins, shores and garden escapes. Flowering season: Summer.

Compare similar plants

Spotted Loosestrife (Lysimachia punctata) carries flowers more extensively along leafy stems. Garden Loosestrife concentrates its flowers toward the top.

A closer look

Flower details

Yellow five-lobed flowers cluster at stem tips and upper leaf axils.

Leaves & stems

Lance-shaped leaves occur opposite each other or in whorls.

Whole plant & habitat

Stems are hairy; sepals commonly have reddish-brown edges. Pair close views with a photograph of the whole plant.

Field photographs

10 field photographs. Select a photograph to enlarge it; use Load more photos to see the rest.

Range & sightings

Native to Europe and Asia; introduced in North America, where it can spread aggressively in wetlands.

Reported U.S. distribution
CO, CT, IL, IN, KY, ME, MD, MA, MI, MN, MT, NH, NJ, NY, OH, PA, RI, VT, WA, WV, WI

Includes native and introduced state records where listed; a state record does not imply occurrence in every county.

Observation maps show submitted records, not every place the plant occurs. Follow local access rules when visiting a site.

Keep learning

Practice recognizing Garden Loosestrife in the flower quiz, or compare it with other plants in the guide.

Sources & further reading

Field photographs: Where’s Wildlife.

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