Garden Yellow Loosestrife

Lysimachia vulgaris

Photo Credit: LMerhoff UConn Bgwd

Garden Yellow Loosestrife Lysimachia vulgaris Stalk with long green thin leaves topped with spire of small yellow flowers

Photo Credit: LMerhoff UConn Bgwd

Plant Description

Perennial upright plant 3-6+ feet tall with 5-petalled yellow primrose-like flower clusters at top of plant and in upper leaf axils. Lance-shaped, softly hairy leaves are opposite or whorled.

Plant Details

Life Forms	Forb
Habitats	Flowing Water & Riparian Habitats Forests & Woodlands Wetlands
ODA Listing	A
Soil and Moisture Conditions	Moist
Suggested Actions	Report to Oregon Invasives Hotline
Shade Preference	Full shade Full sun Part shade
Mature Height	3-6'
Distribution	Limited distribution in Oregon and Washington
Control	If you see this A-listed plant, report it to OregonInvasivesHotline.org or call 1-866-INVADER. Only hand pull or dig very small, new infestations. Cover populations with black plastic or heavy tarp, being sure to secure the edges.
Reproduction and Spread	Spreads by rhizomes and seeds.
Introduced	Garden loosestrife is native to northwestern China, Siberia, other parts of Asia, and Europe.
Look Alikes	Garden loosestrife (Lysimachia punctata)
Impact	Invades and forms dense stands in sensitive wetland and shoreline areas. Difficult to control because it spreads by rhizomes and seeds.
More Info	https://www.oregon.gov/ODA/shared/Documents/Publications/Weeds/GardenLoosestrifeProfile.pdf https://www.nwcb.wa.gov/weeds/garden-loosestrife