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

Beech Leaf Disease ¹⁴
Litylenchus crenatae

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

Emerald Ash Borer ¹⁵
Agrilus planipennis

Hemlock Woolly Adelgid ²²
Adelges tsugae

multiflora rose ²³
Rosa multiflora

alder buckthorn ²⁴
Frangula alnus

common buckthorn ²⁵
Rhamnus cathartica

Black Swallow-wort ²⁶
Vincetoxicum nigrum

Japanese knotweed ²⁷
Fallopia japonica

winged euonymus ⁴
Euonymus alatus

Oriental bittersweet ²⁸
Celastrus orbiculatus

purple loosestrife ²⁹
Lythrum salicaria

Greater celandine ³⁰
Chelidonium majus

Japanese barberry ³¹
Berberis thunbergii

northern bush honeysuckle ³²
Diervilla lonicera

garlic mustard ³³
Alliaria petiolata

Porcelain Berry ²²
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

Beech Leaf Disease 14 Litylenchus crenatae

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

Emerald Ash Borer 15 Agrilus planipennis

Hemlock Woolly Adelgid 22 Adelges tsugae

multiflora rose 23 Rosa multiflora

alder buckthorn 24 Frangula alnus

common buckthorn 25 Rhamnus cathartica

Black Swallow-wort 26 Vincetoxicum nigrum

Japanese knotweed 27 Fallopia japonica

winged euonymus 4 Euonymus alatus

Oriental bittersweet 28 Celastrus orbiculatus

purple loosestrife 29 Lythrum salicaria

Greater celandine 30 Chelidonium majus

Japanese barberry 31 Berberis thunbergii

northern bush honeysuckle 32 Diervilla lonicera

garlic mustard 33 Alliaria petiolata

Porcelain Berry 22 Ampelopsis glandulosa

common reed 34 Phragmites australis