Resources

Noxious Weeds
Noxious weeds threaten the health of our natural areas. The Backyard Habitat Certification Program will help you learn to identify and remove the most damaging of these plant species.
- Noxious Weeds Resources Page – Resources on noxious weed identification and removal as well as area noxious weed removal programs
- Ways to get involved – Resources on how to report weeds and support organizations that work to remove them
Noxious Weeds By Certification Level
SILVER Level Weeds

Blackberries (Himalayan & Evergreen)

Knotweeds

Garlic Mustard

Pokeweed

Yellow Archangel

Yellow Flag Iris

Spurge Laurel

Purple Loosestrife

Policeman’s Helmet

Diffuse Knapweed

Meadow Knapweed

Spotted Knapweed

Traveler’s Joy

Scotch Broom

Giant Hogweed

Ivy (all Hedera species)

Hawkweeds
(including Orange)
GOLD Level Weeds

Butterfly Bush

English Hawthorn (< 20 ft.)

False-brome

Morning Glory

Herb Robert

Italian Arum

Japanese Butterbur

Lesser Celandine

Jubata & Pampas Grass

Shining Geranium

English Holly (< 20 ft.)

Black Locust (< 20 ft.)

Tree of Heaven (< 20 ft.)

Norway Maple (< 20 ft.)
PLATINUM Level Weeds

Creeping Jenny or Moneywort

Portuguese Laurel

Vincas (Major & Minor)

Reed Canarygrass

Fennel

Black Locust (> 20 ft.)

English Hawthorn (> 20 ft.)

English Holly (> 20 ft.)

Tree of Heaven (> 20 ft.)

Norway Maple (> 20 ft.)
.