Invasive Plants on Sears Island

Japanese barberry
Japanese barberry

Invasive plants are a serious threat to nature on the coast of Maine and elsewhere: they crowd out native plants and the wildlife that depend on them, reducing biodiversity and ecosystem functionality. Sears Island has fewer invasive plants than many places in Midcoast Maine. It does have a few invasives, but they are not so populous that we can’t control or even eradicate them. All of this means it is very worthwhile to try to eliminate the invasives present before they get out of control. We have a few enthusiastic volunteers that are helping to remove them as a part of our new invasives management program, and we can always use more help! One very helpful thing you can do is let us know if you see an invasive plant or plants on the island and where you saw it. Please report your observations to us using the form on our site. If you are unsure, it is helpful to submit a photo or a question to us on the form.

 

purple-loosestrife-invasive-plant-at-shore-near-causeway-sears-island-20100806-acdibble-photo-4
Purple loosestrife growing along the shore near the causeway.

HIGHLY INVASIVE PLANTS ESTABLISHED ON THE ISLAND:

  • Japanese barberry
  • Purple loosetrife
  • Canada thistle
  • Oriental bittersweet
  • Autumn olive
  • Garden valerian

 

INVASIVE PLANTS NOT YET PRESENT BUT NEED TO BE WATCHED FOR:

  • Glossy buckthorn
  • Japanese knotweed
  • Garlic mustard
  • Himalayan balsam
  • Multiflora rose
  • Black swallowort
See Picture Guide to Invasive Plants Report Invasives