![]() ![]() This species and its cultivated varieties are noxious weeds in Ohio. Purple loosestrife also spreads vegetatively. A single stalk of purple loosestrife can produce 300,000 seeds. Center for Invasive Species and Ecosystem Health. (It is an introduced species.) This plant invades wetland habitats, crowding out native plants that are important food sources for wildlife. Early Detection & Distribution Mapping System (EDDMapS) - Purple Loosestrife(link is external) University of Georgia. Purple loosestrife is a strikingly beautiful plant that has escaped from cultivation. Similar plants: Flowers of native loosestrife are more widely spaced along the stem than those of purple loosestrife. Long spikes of rose or purple flowers, each with 4-7 wrinkled petals. Lower leaves have downy hairs and clasp the stem.įlower: July to early September. Leaves: Opposite or whorled, 1.5-4 inches long with smooth margins, lacking petioles. Growth Habit: Usually 2- 4 feet tall, but may reach up to 10 feet in nutrient-rich habitats. long (45 cm) held atop lance-shaped leaves. It features pink, purple, or magenta flowers in dense spikes, up to 18 in. #Purple loose strife full#Swamp loosestrife ( Decodon verticillatus) arches out from shorelines, has mostly whorled leaves and flowers in well-separated leaf axils.Habitat: Wet meadows, flood plains, wetlands, ditches. 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. Purple loosestrife is typically found invading lakeshores, wetlands, ponds, and wet pastures and ditches. alatum) is found in moist prairies and wet meadows has winged, square stems, solitary flowers in separated leaf axils, paired lower leaves and alternate upper leaves. Purple loosestrife is a wetland plant native to Europe and Asia that was brought to North America the early 19thcentury. Similar species: Garden yellow loosestrife ( Lysimachia vulgaris) is a non-native, wetland garden escapee with yellow flowers. Stems: Green, sometimes tinged purple, stiff, erect, and generally four-sided (older stems, five or six-sided). Roots: Large woody taproot and many side roots. Purple loosestrife (Lythrum salicaria) is usually found in wetlands, marshes, river and stream sides, roadside ditches, culverts, and lake and pond shores. What does it look like Erect, hairy, summer-green perennial herb (<1-2 m, occasionally <3 m) with a taproot and fibrous roots that form dense surface mats and produce up to 50 stems. Seeds are viable for at least seven years. Where is it originally from Europe and Asia. ![]() Mature plants with many stems can produce two million seeds. A single stem can produce 100,000-300,000 seeds per year. Plants can bloom the first year after seeds germinate.įruits & seeds: Capsules start bursting open from the bottom of the inflorescence upwards from July through October, often while still flowering above. Blooms from the bottom of the flower spike to the top from late June to September. Usually opposite and rotated 90 degrees from those below but are sometimes whorled.įlowers: Closely attached to the stem with five to six pink-rose colored petals. ![]() Leaves: Simple, lance-shaped and do not have petioles. ![]()
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