A.k.a. narrow-leaved loosestrife and fen loosestrife. At home in moist prairies, floodplains, and shallow wetlands. Adapts well to cultivation when neighboring plants aren’t allowed to crowd it out. The drooping, yellow flowers are typical of native loosestrife species, but prairie loosestrife’s leaves are distinctively narrow. NOT related to the non-native, invasive purple loosestrife. Spreading is negligible, but a happy plant with few neighbors may develop slender rhizomes and form a small colony. 

Light: Full Sun, Part Sun/Shade

Soil Moisture: Wet, Wet Mesic, Mesic

Soil Type: Loam, Sandy, Rocky

Height: 1’-2.5’

Bloom Color: Yellow

Bloom Time: Jul-Aug

Root Type: Fibrous

Notable Wildlife Interactions: Flowers attract a few species of bee. Hosts three species of moth and a few smaller insects.

Notes: Don’t confuse Prairie Loosestrife (Lysimachia quadriflora) with Whorled Loosestrife (Lysimachia quadrifolia). The two are fairly similar plants, but Prairie Loosestrife has much narrower leaves. Despite their similarities, I’m about to fight a botanist over those species names. I mean honestly-