Search Field Guide
Advanced Search
MT Gov Logo
Montana Field Guide

Montana Field Guides

Garlic Mustard - Alliaria petiolata
Other Names:  Jack-by-the-hedge, Penny Hedge, Alliaria officinalis

Non-native Species

Global Rank: GNR
State Rank: SNA
(see State Rank Reason below)

Agency Status


External Links

State Rank Reason (see State Rank above)
Alliaria petiolata has been detected in the state twice (2013 - Daniels County and 2015 - Lewis and Clark County) and both populations were eradicated.
General Description
We do not yet have descriptive information on this species.  Please try the buttons above to search for information from other sources.

Species Range
Montana Range Range Descriptions


Observations in Montana Natural Heritage Program Database
Number of Observations: 11

(Click on the following maps and charts to see full sized version) Map Help and Descriptions
Relative Density



(Observations spanning multiple months or years are excluded from time charts)

Predicted Suitable Habitat Model

This species has a Predicted Suitable Habitat Model available.

To learn how these Models were created see


Login Logout
Citation for data on this website:
Garlic Mustard — Alliaria petiolata.  Montana Field Guide.  .  Retrieved on , from