ORLAND – The Great Pond Mountain Conservation Trust’s Invasive Species Control Team is offering an invasive plant control workshop led by Alison Dibble, Ph.D., 9 a.m.-noon Saturday, July 21, starting at Craig Brook National Fish Hatchery in East Orland, rain or shine.

Participants will learn to identify and control invasive plants such as purple loosestrife, bull thistle and Japanese barberry, and join a team of conservation volunteers, who will work this summer and fall eradicating alien plants from sites in Orland’s Great Pond Mountain Wildlands.

Part of the workshop will be indoors, and part will be outdoors in the Wildlands. Be prepared for some moderate hiking, and bring a hand lens if you have one.

Participation is limited to 12. Please register by e-mailing bennatti@prexar.com or calling 469-6066.