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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. [1][3][6], Native to Europe, Asia, northwest Africa, and southeastern Australia. ex Colla is also now considered synonymous. This species can be very invasive and has been declared a noxious weed in some countries. Stay informed about PFAFs progress, challenges and hopes by signing up for our free email ePost. We are currently updating this section. Main Bloom Time: Late summer, Mid summer. 1885) Reference: Houghton-Thompson et al. Genus Lythrum can be annuals or herbaceous perennials, with simple leaves in opposite pairs and small star-shaped flowers in leafy racemes Details L. salicaria is a robust herbaceous perennial with upright stems to 1.2m tall, clad in narrow, willowy leaves, and small vivid purplish-pink flowers 2cm wide in dense terminal spikes over a long period in summer Special Features:Invasive, Naturalizing, Attracts butterflies, Suitable for cut flowers. Plants For A Future can not take any responsibility for any adverse effects from the use of plants. Research began in 1985 and today the plant is managed well with a number of insects that feed on it. Lythrum salicaria known commonly as Purple Loosestrife, is an interesting species native not only to Australia but widespread in Europe, Asia and North America.. Plant them out in the spring. Wilson, L. M., Schwarzlaender, M., Blossey, B., & Randall, C. B. Purple loosestrife (Lythrum salicaria) Stem. The plant was sold in North Dakota by its genus name Lythrum for at least 50 years. 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. Up to 6 ft. tall, 4-5 sided, covered with short hairs and often branched; multiple stems arise from root crown. The Arrival. Our new book to be released soon is Edible Shrubs. Purple loosestrife (Lythrum salicaria), a beautiful but aggressive invader, arrived in eastern North America in the early 1800’s.Plants were brought to North America by settlers for their flower gardens, and seeds were present in the ballast holds of European ships that used soil to weigh down the vessels for stability on the ocean. [2][6][7][8], Found in ditches, wet meadows and marshes and along sides of lakes. All plant pages have their own unique code. Moisture: D = dry M = Moist We = wet Wa = water. The adult feeds on the leaves of the plant, producing characteristic round holes. It has strong, upright stems, from which long, poker-like heads of bright purple-red flowers appear from midsummer. Externally, the plant is used as a cleansing and healing wash for wounds, sores, impetigo, eczema, excess vaginal discharge, vaginal itching etc[7, 222, 238, 254]. Smartphone users quickly have information on a plant directly for the website on their phone. Sowing time: Spring (self-seeding) Planting time: March to April and September to October. Type a value in the Celsius field to convert the value to Fahrenheit: Plants For A Future have a number of books available in paperback and digital form. The stems are reddish-purple or red to purple and square in cross-section. It will also grow in coastal gardens. Reed swamps at the margins of lakes and slow-flowing rivers, fens and marshes, avoiding acid soils[17]. Purple Loosestrife (Lythrum salicaria) Cultivation and Biocontrol Insect Release Authorization Permit (Part 1) Form 3200-116 (R 5/03) Page 1 of 2 As a biocontrol cooperator, you will join hundreds of other volunteers using a safe, effective and long-term strategy to control this aggressvie, non-native plant. Harvest the shoots with plenty of underground stem when they are about 8 - 10cm above the ground. They are especially associated with boggy areas, river banks and ponds, though in cultivation they often tolerate drier conditions. Lythrum salicaria ‘Robert’ is a more compact variant of Purple loosestrife growing to a maximum of around 80cm with spikes of clear pink flowers from June-September. Lythrum salicaria, or purple loosestrife,[1] is a flowering plant belonging to the family Lythraceae. Lythrum salicaria LITH-rum sal-ih-KARE-ee-ah Audio The showy purple spikes of purple loosestrife are attractive in the garden and along roadsides, but the plant’s rampant spread has greatly reduced the ecological value of marshes by displacing native wetland vegetation such as cattails ( Typha spp.) For best results grow Lythrum salicaria in moist soil, such as around the edge of a pond. Etymology: (Greek: clotted blood, from use of Lythrum salicaria, the first named sp., to stop hemorrhaging, according to Gerard, Bull Torrey Bot Club 12: 60. This is to help with control of these plants in native wetland areas. It features pink, purple or magenta flowers in dense spikes, up to 18 in. Other names include spiked loosestrife and purple lythrum. For more information about QR Codes click here. Once established, loosestrife stands are difficult and costly to remove by mechanical and chemical means. and Warburg, R.F. 2005 Ann Bot (London) 96:877--885 In North America, purple loosestrife may be distinguished from similar native plants (e.g., fireweed Chamerion angustifolium, blue vervain Verbena hastata, Liatris Liatris spp., and spiraea (Spiraea douglasii) by its angular stalks which are square in outline, as well as by its leaves, which are in pairs that alternate at right angle and are not serrated. The Project is directed at enabling designers of ‘carbon farms’ and ‘food forests’: agroecosystems of perennial plants, to choose the most appropriate plants for their requirements and site conditions. It is a perennial plant. Spectacular when in full bloom, Purple Loosestrife (Lythrum salicaria) is a vigorous, upright perennial enjoying an extremely long bloom season from late spring to late summer. 2019 Status in Maine: Widespread.Very Invasive. They have been selected to provide a mix of different plant sizes and growing conditions. Purple loosestrife, Lythrum salicaria, is a tall-growing wildflower that grows naturally on banks of streams and around ponds. We are working on a subset of plants in the PFAF database identified as having the most potential for inclusion in such designs. One main leader stem, but many side branches often make the plant look bushy. In some cases the plants sold are sterile, which is preferable. [1][2][3], L. salicaria is very variable in leaf shape and degree of hairiness, and a number of subspecies and varieties have been described, but it is now generally regarded as monotypic with none of these variants being considered of botanical significance. Lythrum salicaria (Purple Loosetrife) is listed in the Invasive Plant Atlas of the United States. "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. If you have important information about this plant that may help other users please add a comment or link below. Its long stalks of purple flowers are a common sight in wetlands. Leaves are opposite, (sometimes whorled), nearly linear, and attached to four-sided stems without stalks. Only comments or links that are felt to be directly relevant to a plant will be included. Planting, sale, or other distribution without a permit is also prohibited in Indiana (312 IAC 14-24-12). The leaves are lanceolate, 3–10 cm long and 5–15 mm broad, downy and sessile, and arranged opposite or in whorls of three. QR Codes are barcodes that can be read by mobile phone (smartphone) cameras. Division in March or October[188]. [citation needed]. When the larvae emerge they eat the flowers' ovaries, and the plant is unable to create seeds. The flowering plant is harvested in the summer and can be used fresh or dried[9].

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