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Botanical Nerd Word: Culm

Culm: A hollow or pithy stalk or stem, as in the grasses, sedges, and rushes.*

Besides adding winter interest to the garden, grasses provide homes for many native insects which overwinter in the hollow stems.

*Harris, J.G., Harris, M.W. (2001). Plant identification terminology: An illustrated glossary (2nd ed.). Spring Lake: Spring Lake Publishing.

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