Native Plant Nursery Ann Arbor, MI.
Plant Database Documentation

Coefficients of Wetness (W)

Defines the estimated probability for which a species is likely to occur in wetland soils. Negative signs (-) indicating a wet tendency and positive signs (+) indicating a dry tendency.

This W coefficient originated from the Michigan Floristic Quality Assessment, 1996.
The Native Plant Nursery LLC, Ann Arbor, Michigan, US
we grow plants native to Michigan from Michigan collected seed or plants.

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