Fringed Loosestrife is a native yellow-flowered wildflower of moist woodland edges and stream banks across North America, growing 2–4 feet tall with pairs of opposite leaves and nodding, five-petaled yellow flowers with fringed edges. This native loosestrife should not be confused with the highly invasive Purple Loosestrife. It is a host plant for a remarkable specialist bee — the Loosestrife Cellophane Bee — that lines its nest cells with loosestrife petal secretions.
Best time to see a Fringed Loosestrife
The best time to see a Fringed Loosestrife is June–July, when about 74% of U.S. sightings happen, based on 14,552 research-grade iNaturalist observations.
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