New Hampshire Guide to Upland Invasive Species

glossy buckthorn

This guidebook by Doug Cygan, Invasives Species Coordinator with the N.H. Dept. of Agriculture, Markets & Food, includes 26 upland plants, three insects, and three aquatic plants designated as invasive in New Hampshire. It contains illustrations, descriptions and recommendations for control. Download this resource for the printable version.

Upland plants included
Norway Maple, Acer platanoides
Tree of Heaven, Ailanthus altissima
Garlic Mustard, Alliaria petiolata
Japanese Barberry, Berberis thunbergii
European Barberry, Berberis vulgaris
Oriental Bittersweet, Celastrus orbiculatus
Spotted Knapweed, Centaurea biebersteinii
Black Swallow-Wort, Cynanchum nigrum
Pale Swallow-Wort, Cynanchum rosicum
Autumn Olive, Elaeagnus umbellata
Burning Bush, Euonymus alatus
Giant Hogweed, Heracleum mantegazzianum
Dame’s Rocket, Hesperis matronalis
Perennial Pepperweed, Lepidium latifolium
Blunt-Leaved Privet, Ligustrum obtusifolium
Showy Bush Honeysuckle, Lonicera x bella
Japanese Honeysuckle, Lonicera japonica
Morrow’s Honeysuckle, Lonicera morrowii
Tatarian Honeysuckle, Lonicera tatarica
Japanese Stilt-grass, Microstegium vimineum
Japanese Knotweed, Polygonum cuspidatum
Mile-a-Minute Vine, Polygonum perfoliatum
Bohemian Knotweed, Reynoutria japonica
Common Buckthorn, Rhamnus cathartic
Glossy Buckthorn, Rhamnus frangula
Multiflora Rose, Rosa multiflora

Invasive insects included (To see the complete list of all 16 invasive insects refer to rules Agr 3800)
Hemlock Wooly Adelgid, Adelges tsugae
Emerald Ash Borer, Agrilus planipennis
Asian Longhorned Beetle, Anoplothora glabripe

Invasive aquatic plants included (To see the complete list of invasive aquatic plants refer to DES’s Env-Wq 1300 rules Invasive Upland Plant Species (Agr 3800)
Variable Milfoil, Myriophyllum heterophyllum
Purple Loosestrife, Lythrum salicaria
Common Reed, Phragmites australis