The flowers are showy and bright, and a number of cultivars have been selected for variation in flower colour, including: Family Lythraceae Scientific Name Lythrum salicaria ← → Other Common Names: purple lythrum. Purple loosestrife (Lythrum salicaria), a beautiful but aggressive invader, arrived in eastern North America in the early 1800’s. Stems have several branches covered with soft hairs and are capable of spreading by bits of stem, root and seed. Annual Cycle: Purple loosestrife is a perennial that reproduces by seeds and rhizomes (root- like underground stems). Mature root crown. Seed production is prolific. Cutting alone is not a control option for purple loosestrife. [4], The fruit is a small 3–4 mm capsule[5] containing numerous minute seeds. 3.6 out of 5 stars 3 ratings. Purple Lythrum flowering lasts throughout the summer period. If several larvae inhabit the same root, the plant can be killed. This shopping feature will continue to load items when the Enter key is pressed. Garden varieties of loosestrife have also been proven to pollinate with purple loosestrife and help it multiply. The purple loosestrife can also be propagated by cuttings in summer or by division. Native to Eurasia, purple loosestrife (Lythrum salicaria) now occurs in almost every state of the US. "Competition for pollinators and intra-communal spectral dissimilarity of flowers", "Non-native Invasive Freshwater Plants - Purple Loosestrife (, United States National Agricultural Library,, Articles with unsourced statements from December 2020, Articles with unsourced statements from April 2018, Creative Commons Attribution-ShareAlike License, 'Happy' with red flowers on a short (60 cm) stem, 'Purple Spires' with purple flowers on a tall stem. Problems Caused Purple loosestrife (Lythrum salicaria L.) was introduced to North America from Europe and Asia in the early to mid 1800’s.The seeds were carried in ship ballast and on livestock that were brought to this country for trade. Lythrum salicaria is a herbaceous perennial plant, that can grow 1–2 m tall, forming clonal colonies 1.5 m or more in width with numerous erect stems growing from a single woody root mass. L. alatum is usually shorter in stature, being around 40-80 cm (1-2.5 ft.) tall. The fruit is a capsule, with small seeds. 5 and related cultivars. Each stem is four- to six-sided. The flowers are reddish purple, 10–20 mm diameter, with six petals (occasionally five) and 12 stamens, and are clustered tightly in the axils of bracts or leaves; there are three different flower types, with the stamens and style of different lengths, short, medium or long; each flower type can only be pollinated by one of the other types, not the same type, thus ensuring cross-pollination between different plants. Please make sure, when you make a comment about a plant, that you have the right plant. Purple Loosestrife seed (Lythrum salicaria) quantity. 'Roseum Superbum' with large pink flowers. The loosestrife root weevil Hylobius transversovittatus is a large red nocturnal weevil, which spends its nights feeding on leaves and leaf buds. Shipping Info Shoots and adventitious roots will develop. U.S. Distribution: Purple loosestrife has been introduced to every state except Florida. Whilst it will grow in semi-shade it will grow more vigorously in full sun. Evidence: Purple stalks blooming in wetlands from June through early August. Seeds are easily dispersed by water and in mud adhered to aquatic wildlife, livestock and people. Purple loosestrife is a tall, multi-stemmed perennial with narrow spikes densely packed with small magenta or purple flowers. Purple loosestrife seeds are light enough to be dispersed by wind. The larvae emerge from their eggs and immediately burrow into the root of the plant, which they feed on continuously for over a year. 2 any nonnative member of the genus Lythrum or hybrid of the genus is prohibited from sale. Purple loosestrife is found throughout Minnesota. Apr 25, 2018 - Explore Loosestrifemovement's board "Purple Loosestrife" on Pinterest. Purple Loosestrife Flower Seeds (Lythrum Salicaria Rosy Gem) 100+Seeds Brand: underthesunseeds. Controlled burns help control purple loosestrife by reducing seed on the soil surface and removing dead biomass, which will improve the efficiency of any herbicide application.

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