Arboretum  - Alliaria petiolata (Garlic Mustard)

Date: 02006 June 5         Time: 10AM - 11:30AM

Conservation Area: Acton Arboretum

Workers: Jim Snyder-Grant

Location (description) Inner ('woodsy') Meadow, a few yards south east of yellow & blue trail intersection.

Location (Coordinates): 42° 28' 49.8" N, 71° 25' 59.4" W (WGS84/NAD83 - from Google Earth)

Target Species (Latin): Alliaria petiolata     Target Species (Common): Garlic Mustard

Permissions: Written permission (via email May 23, 2006 1:14 PM) from Tom Tidman, Acton Natural Resources Director.

Wetlands: No  Herbicides: No

Summary of Plan: Pull A. petiolata invasion in the woodsy meadow, and look at the other two remaining known invasions.

Reference to larger plan: http://snyder-grant.org/jim/plants/invasives/ActonReport.doc - Garlic Mustard is the #1 priority species.

Survey (or re-survey) results: Area of invasion was around 20 X 40 feet, with may plants coexisting. Other plant species included poison Ivy, Virginia creeper, wild geraniums, and other spring ephemerals I could not ID. Many grasses. Direct sun. This area is mowed periodically (every other year?) by town staff.

The other two invasions were at the edge of the Arboretum. The larger of the two was mostly on private land. The other was hard to tell - will need to return with a more accurate map.

Results: Bagged 660 plants in two kitchen garbage bags. (Disposed of them at the transfer station as trash for burning).  Many thick but small stands, and many outliers interspersed with other plants.  Just pulled second-year plants - plenty of basal rosettes left to be picked next year when they bolt.

Next Steps (roughly in priority order):

  1. This season or next: .verify that smaller invasion is on Arb land, and pick it if it is, or seek owner permission if not.
  2. [ next season]: ID owner of other private land with larger invasion, offer to pull garlic mustard (and do so)
  3. Next season: re-pull second-year plants in all areas (Repeat for 5 years)

Lessons Learned: