In the clear water of Quanah Parker Lake, Wichita Mountains National Wildlife Refuge
In the clear water of Rush Lake, Wichita Mountains National Wildlife Refuge
Description: plants are fully submerged and rooted underwater, stems usually grow 3-10 ft. (0.9-3 m) in length, but can be as much as 30 ft. (9.1 m) long. Leaves are bright green, finely dissected, and whorled. The delicate leaflets give this plant a feathery appearance.
Ecological Threat: forms dense mats that can restrict light, out-competing native plants, clogging waterways, and restricting the oxygen level of water.
Biology & Spread: These plants are highly competitive and grow rapidly.
In Oklahoma: Eurasian milfoil is the most abundant and widespread aquatic invasive plant in Oklahoma. It is found across the state and in over a dozen public lakes. Water bodies of the Wichita Mountains Wildlife Refuge has large infestations.
Management: Aquatic Weed Management, OSU Extension Factsheet
Additional Information: Problem Horticultural Plants, OSU Extension Factsheet