Macrophyte Mastery

Curlyleaf Pondweed (Potamogeton crispus)—Even though this overtly abundant aquatic plant is a Eurasian exotic—one capable of overgrowing native species—a couple of elements bear mentioning. “Curlyleaf pondweed is a coolwater specialist,” Radomski says. “It dies back around mid-July, lies dormant during late summer, then produces winter foliage starting in September. When water temps drop into the low-70°F range, plants produce winter foliage, remaining active under snow and ice, often even in murky waters.”

Found primarily in softer bottom sediments, this pondweed sprouts slender, rippled leaves that are easy to identify. Again, even live pondweeds often appear more brown than green.

Beyond the obvious wintertime appeal of live curlyleaf to many aquatic animals, this plant is positively related to populations of large bluegills. “When curlyleaf pondweed dies back in summer, previously hidden juvenile bluegills are exposed to predation, reducing their numbers,” Radomski reports in a study of submersed plants.** “The high lake fertility levels associated with curlyleaf indicate abundant crappie food. Meanwhile the plant’s early spring propensity to overgrow spawning sites potentially limits crappie propagation.”

As you become familiar with those certain submersed plants so attractive to winter panfish, each new lake greets you like your home waters. You soon know right where to look, even if you can’t exactly explain how you know. You’ll find panfish glory sooner rather than later.