![]() ![]() ![]() If done in midsummer, new foliage will emerge in 2 weeks with a potential fall rebloom. Plants may be sheared to the ground after blooming. Deadhead after flowering to prevent self-seeding. Purple loosestrife, Lythrum salicaria, is a tall-growing wildflower that grows naturally on banks of streams and around ponds.Find where this species is invasive in the United States.Clarifying its influence would provide insight into appropriate management actions following invasion. Some cultivars have been marketed as being sterile such as 'Morden Pink', 'Morden Gleam' or 'Dropmore Purple' but there seems to be evidence that these cultivars can produce highly fertile seeds if grown with other cultivars or wild loosestrife. The exotic invasive wetland plant purple loosestrife (Lythrum salicaria) is often considered to have negative impacts on native plant and animal species, but this is debated. Seeds are easily dispersed by water and in mud adhered to aquatic wildlife, livestock, and people. One mature plant can produce more than 2 million seeds annually. The problem with this plant is that it is so invasive in North America that it can rapidly colonize wet areas.A welcomed addition to beds, and borders, this is an ideal candidate for bog gardens and along ponds and streams.Its 50 stems are four-angled and glabrous to pubescent. wide (60-70 cm), Purple Loosestrife thrives in average, medium to wet soils in full sun to part shade. Identification: Purple loosestrife is an erect perennial herb in the loosestrife family (Lythraceae) that develops a strong taproot, and may have up to 50 stems arising from its base. It is wise to check with your extension service to see if your variety is appropriate for your area. Growing up to 2-4 feet tall (60-120 cm) and 24-28 in. The purple loosestrife varieties are considered slightly invasive in some zones and gooseneck loosestrife can also be very aggressive in certain regions.This plant with purple flowers can grow up to 7 feet tall and grows in masses taking over the landscape. It was first discovered in the United States in the 1800s and by 1938 was found in Minnesota. long (45 cm) held atop lance-shaped leaves. Purple loosestrife ( Lythrum salicaria) is an aquatic invasive plant species that has taken over many wetland areas in Minnesota. It features pink, purple, or magenta flowers in dense spikes, up to 18 in. Plants in northern regions are smaller and flower earlier than those in southern regions. Spectacular when in full bloom, Purple Loosestrife (Lythrum salicaria) is a vigorous, upright perennial enjoying an extremely long bloom season from early to late summer. Description Purple loosestrife has evolved to tolerate the shorter growing season and colder weather of the central and northern parts of the provinces. ![]()
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