How deep can Variable watermilfoil grow?

Variable watermilfoil (Myriophyllum heterophyllum) is a submersed aquatic plant that can thrive in a variety of water conditions. This plant is known for its capability to grow at significant depths, generally ranging from shallow waters to deeper parts of lakes and ponds. The correct response states that Variable watermilfoil can grow as deep as 12 feet.

This depth allows the plant to access sunlight, which is crucial for photosynthesis, while also enabling it to take advantage of nutrients found in the sediment at the bottom of water bodies. In contrast, the other options present shallower depth limits that do not fully encompass the known growth potential of Variable watermilfoil. Thus, acknowledging the full extent of its growth capability is important for understanding its ecological role and potential impacts on aquatic environments.