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Plant Database

Search for native plants by scientific name, common name or family. If you are not sure what you are looking for, try the Combination Search or our Recommended Species lists.

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Pilea microphylla

Pilea microphylla (L.) Liebm.

Artillery Weed, Rockweed

Urticaceae (Nettle family)

Synonym(s): Parietaria microphylla

USDA Symbol: PIMI2

USDA Native Status: L48 (N), HI (I), PR (N), VI (N)


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Plant Characteristics

Duration: Annual , Perennial
Habit: Herb , Subshrub
Fruit Type: Achene
Size Notes: Up to about 8 inches tall.

Bloom Information

Bloom Color: White , Pink , Green
Bloom Time: Jan , Feb , Mar , Apr , May , Jun , Jul , Aug , Sep , Oct , Nov , Dec


USA: AL , AR , FL , GA , KY , LA , MI , MS , SC , TN , TX
Native Habitat: Waste places, hammocks, rocky woods, cultivated plots, on masonry.

National Wetland Indicator Status

This information is derived from the U.S. Army Corps of Engineers National Wetland Plant List, Version 3.1 (Lichvar, R.W. 2013. The National Wetland Plant List: 2013 wetland ratings. Phytoneuron 2013-49: 1-241). Click here for map of regions.

Web Reference

Webref 3 - Flora of North America (2014) Missouri Botanical Garden, St. Louis, MO & Harvard University Herbaria, Cambridge, MA.
Webref 23 - Southwest Environmental Information Network (2009) SEINet - Arizona Chapter

Additional resources

USDA: Find Pilea microphylla in USDA Plants
FNA: Find Pilea microphylla in the Flora of North America (if available)
Google: Search Google for Pilea microphylla


Record Modified: 2020-12-03
Research By: CBR

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