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Invasive Plants Found in Harpswell

The following list of plants were found in HIPP’s surveys in 2015 and 2016. For more about HIPP, click here.

Amur Maple (Acer ginnala)
Asiatic Bittersweet (Celastrus orbiculata)
Autumn Olive (Eleagnus umbellata)
Bishop’s Weed or Goutweed (Aegopodium podagraria)
Black Swallow-wort (Cynanchum louiseae)
Burning Bush (Euonymous alatus)
Common Reed (Phragmites australis)
Cypress Spurge (Euphorbia cyparissias)
Dame’s Rocket (Hesperis matronalis)
Garlic Mustard (Alliaria petiolata)
Himalayan Touch-me-not (Impatiens glandulifera)
Japanese Barberry (Berberis thunbergii)
Japanese Knotweed (Fallopia japonica)
Morrow Honeysuckle (Lonicera morrowii)
Multiflora Rose (Rosa multiflora)
Norway Maple (Acer platanoides)
Purple Loosestrife (Lythrum salicaria)
Spotted Knapweed (Centaurea maculosa)
Yellow Iris (Iris pseudoacorus)