EwA Guide to Common Invasive Species in Middlesex County (MA, US)

An EwA companion guide to the common invasive species (fauna + flora) found in Middlesex County (Massachusetts, U.S.).
This facilitates their identification in the field, allowing us to remove them when possible.
This is a work in progress, and we invite you to tell us what to ...more ↓

All 38

Norway maple ¹
Acer platanoides

lesser celandine ²
Ficaria verna

black locust ³
Robinia pseudoacacia

common buckthorn ⁴
Rhamnus cathartica

tree-of-heaven ⁵
Ailanthus altissima

Goutweed ⁶
Aegopodium podagraria

Morrow's honeysuckle ⁷
Lonicera morrowii

dame's rocket ⁸
Hesperis matronalis

sycamore maple ⁹
Acer pseudoplatanus

Grey Willow ¹⁰
Salix cinerea

Yellow Iris ¹¹
Iris pseudacorus

autumn olive ¹²
Elaeagnus umbellata

reed canary grass ¹³
Phalaris arundinacea

Slender Leafy Spurge ¹⁴
Euphorbia virgata

Bell's honeysuckle ¹⁵
Lonicera × bella

Curly-leaf Pondweed ¹⁶
Potamogeton crispus

water chestnut ¹⁷
Trapa natans

Carolina Fanwort ¹⁸
Cabomba caroliniana

broadleaved pepperweed ¹⁹
Lepidium latifolium

creeping Jenny ²⁰
Lysimachia nummularia

Eurasian water-milfoil ²¹
Myriophyllum spicatum

multiflora rose ²²
Rosa multiflora

alder buckthorn ²³
Frangula alnus

common buckthorn ²⁴
Rhamnus cathartica

Black Swallow-wort ²⁵
Vincetoxicum nigrum

Japanese knotweed ²⁶
Fallopia japonica

winged euonymus ⁴
Euonymus alatus

Oriental bittersweet ²⁷
Celastrus orbiculatus

purple loosestrife ²⁸
Lythrum salicaria

Greater celandine ²⁹
Chelidonium majus

Japanese barberry ³⁰
Berberis thunbergii

northern bush honeysuckle ³¹
Diervilla lonicera

garlic mustard ³²
Alliaria petiolata

Porcelain Berry ³³
Ampelopsis glandulosa

common reed ³⁴
Phragmites australis

Edited by Claire O'Neill, Joe MacIndewar, and Laura Costello, some rights reserved (CC BY-SA)

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EwA Guide to Common Invasive Species in Middlesex County (MA, US)

Norway maple 1 Acer platanoides

lesser celandine 2 Ficaria verna

black locust 3 Robinia pseudoacacia

common buckthorn 4 Rhamnus cathartica

tree-of-heaven 5 Ailanthus altissima

Goutweed 6 Aegopodium podagraria

Morrow's honeysuckle 7 Lonicera morrowii

dame's rocket 8 Hesperis matronalis

sycamore maple 9 Acer pseudoplatanus

Grey Willow 10 Salix cinerea

Yellow Iris 11 Iris pseudacorus

autumn olive 12 Elaeagnus umbellata

reed canary grass 13 Phalaris arundinacea

Slender Leafy Spurge 14 Euphorbia virgata

Bell's honeysuckle 15 Lonicera × bella

Curly-leaf Pondweed 16 Potamogeton crispus

water chestnut 17 Trapa natans

Carolina Fanwort 18 Cabomba caroliniana

broadleaved pepperweed 19 Lepidium latifolium

creeping Jenny 20 Lysimachia nummularia

Eurasian water-milfoil 21 Myriophyllum spicatum

multiflora rose 22 Rosa multiflora

alder buckthorn 23 Frangula alnus

common buckthorn 24 Rhamnus cathartica

Black Swallow-wort 25 Vincetoxicum nigrum

Japanese knotweed 26 Fallopia japonica

winged euonymus 4 Euonymus alatus

Oriental bittersweet 27 Celastrus orbiculatus

purple loosestrife 28 Lythrum salicaria

Greater celandine 29 Chelidonium majus

Japanese barberry 30 Berberis thunbergii

northern bush honeysuckle 31 Diervilla lonicera

garlic mustard 32 Alliaria petiolata

Porcelain Berry 33 Ampelopsis glandulosa

common reed 34 Phragmites australis