Narrow-leaf pondweeds, often referred to as narrow leaf, are actually different
aquatic plants with similar traits. The three narrow-leaf pondweeds native to and
found in Minnesota lakes are leafy pondweed, sago pondweed and flat-stemmed
pondweed.
How to identify:
Narrow-leaf pondweeds can grow up to 10-feet tall and can be found in all sediment
types, but thrive in sand. Narrow-leaf pondweeds usually do not reach the surface or
have floating weeds, but some types do reach the surface and flower. The narrow-
leaf pondweeds have skinny, dark-green leaves and often grow thick, especially in
July.
Importance of narrow-leaf pondweeds:
Narrow-leaf pondweeds are native to Minnesota and have many qualities that are
beneficial to our lake ecosystems. Narrow-leaf pondweeds are great sources of food
for fish and waterfowl alike. It also doubles as shelter for some fish, including perch
and bluegill. Narrow-leaf pondweed can also starve out other lake weeds in order to
outlive them by growing in thick clusters; this is particularly helpful when it comes
to controlling invasive species plant growth.