Unfortunately, due to the abundance of this species in other areas, we cannot offer free control everywhere. This plant is on our EDRR list, and we provide free control east of the Sandy River. If you think you have found this plant please report it immediately. White or light pink flowers are occasionally produced. Purple loosestrife plants produce many flower spikes that top the shrubs with primarily magenta colored flowers from July through September or October. The most easily identifiable feature of purple loosestrife is its extremely showy flower. It has downy leaves that are lance-shaped and rounded or heart-shaped at the base and are whorled or oppositely arranged. ![]() Its woody stems have four to six angular sides. It ranges between 3 and 10 feet in height. Purple Loosestrife is a stout, multi-stemmed perennial forb with a strongly developed taproot. It has small, dark green leaves and produces small white or purple flowers. The black nightshade is a annual herb that grows up to two feet tall. Purple loosestrife has completely taken over this meadow in Oaks Bottom Wildlife Refuge. This pesky weed can be found in gardens, landscapes, and even potted plants. Best Weeds with Purple Flowers Glechoma hederacea Lamium purpureum Myosotis sylvatica Viola odorata Cirsium vulgare Oxalis violacea Verbena bonariensis. If left unchecked purple loosestrife will continue to spread outward, creating immense stands consisting only of itself. Purple loosestrife is detrimental to native wetland vegetation and wildlife, particularly water fowl, because it displaces native plants used for forage. It can also spread vegetatively by re-sprouting from cut stems and regenerating from small pieces of dislodged root stock. The seeds are easily dispersed by wind, water, wildlife, livestock, and people. Though purple loosestrife was first reported in North America in 1814, its abundance in Multnomah County is still minimal and we wish to keep this weed from becoming widely established throughout the county.īecause of its high rate of seed production this species can dramatically increase its population size when conditions are optimal. It can be found in wetlands, marshes, wet meadows, river banks, lake shores, ditches and other wet areas. ![]() Purple loosestrife (Lythrum salicaria) is a showy, purple flowering shrub native to Eurasia.
0 Comments
Leave a Reply. |