PLANTS {blender}R Documentation

USGS PLANTS database data


This data set includes county-level occupancy for native and exotic plants in 47 US states




List containing a data.frame for the native species in each state and a second data.frame for the exotic species in each state. Each data frame is organized with counties as columns and species as rows.


Per the USDA PLANTS Database website, species were listed as "native" if their L48 native status was listed as N, N?, NI, or NI? and "exotic" if their L48 native status was listed as GP, GP?, I, I?, N?I, W, or W?. See for descriptions of these terms.

The USDA PLANTS Database does not include county-level data on Alaska or Maryland. Hawaii was excluded from this data set because L48 native status did not apply to it.


The USDA PLANTS Database can be found at


USDA, NRCS. 2010. The PLANTS Database (, November 23, 2010). National Plant Data Center, Baton Rouge, LA 70874-4490 USA.

Used as an example in Harris et al. 2011. "Occupancy is nine-tenths of the law" The American Naturalist.

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