This week’s invasive species is curlyleaf pondweed (Potomogeton crispus). This aquatic plant can grow in low light and low temperatures. Here are some interesting facts about the plant:
Native to: Eurasia, Africa, Australia
Look alikes: Largeleaf pondweed and claspingleaf pondweed
Identifying Features: Curlyleaf pondweed is a rooted submerged aquatic plant with greenish brown, wavy leaves.
Why it’s problematic: Curlyleaf pondweed forms very dense mats and therefore prevents other native species from thriving and maturing, as well as impeding recreational activities like swimming. When it decomposes, it reduces oxygen levels in the water, which is harmful for other aquatic species.