March 21-April 12, 2026
JOIN US at any of these tree rescues to learn about invasive plants and what you can do to help!
What to Know Before You Go
What to Wear: Long-sleeved shirts and long pants to protect against thorns, sturdy shoes, a hat.
What to Bring: Water. See instructions for each event about tools. If you have them, bring clippers, loppers, and/or small saws. If you don’t, most event leaders will have some extra tools you can borrow.
Sign Up: Please use the registration form or link on the calendar to let the event leaders know you are coming. Children must be over age 11 to actively participate.
Would you rather help in other ways?
Volunteer to help organize? Please fill out the interest form.
Donate money to support the work of the PRISM or adopt parks? Please see this page.
Adding Events to the Calendar
Please fill out this form to let us know about your invasive plant events, whether hands-on or purely educational.
Registering People for Your Events
It is always wise to request people register for events, both so you can prepare and so you can contact them if your plans change. It is helpful to use a form so you don’t have to post your email on a public calendar. We can provide you with a form that will automatically send you the responses. See this sample registration form. Email