12318722Q0264 Attachment 2 ENF Invasive Plant List.docx

Invasive Plant List for the Eldorado National Forest 8/01/2019

Group 1 (Eradicate): Highly invasive species known to occur on the Eldorado National Forest. Species are uncommon and are a priority for inventory, control, and eradication.

Acroptilon repens Russian knapweed Aegilops cylindrica Jointed goatgrass Ailanthus altissima Chinese tree of heaven Arundo donax Arundo Centaurea calcitrapa purple starthistle Centaurea diffusa diffuse (white) knapweed Centaurea stoebe spotted knapweed Cirsium arvense Canada thistle Euphorbia oblongata oblong spurge Isatis tinctoria dyer’s woad Lepidium latifolium tall whitetop Lepidium draba whitetop Lythrum salicaria purple loosestrife Potentilla recta Sulfur cinquefoil Sorghum halepense Johnson grass

Group 2 (Control): Established or widespread species known to occur on the Eldorado National Forest. Inventory all infestations. Annually treat a portion of known infestations, focusing first on eradicating/containing isolated outlying infestations and, over time, reducing the footprint of larger, less isolated infestations.

Aegilops triuncialis barbed goatgrass Carduus pycnocephalus Italian thistle Centaurea melitensis tocalote Centaurea solstitialis yellow starthistle Chondrilla juncea rush skeleton weed Cytisus scoparius Scotch broom Elymus caput-medusae medusahead Foeniculum vulgare Fennel Genista monspessulana French broom Spartium junceum Spanish broom

Group 3 (Control): Established or widespread species known to occur on the Eldorado National Forest. Inventory and treat isolated leading edge infestations or where concurrent with higher priority infestations.

Brassica nigra black mustard Bromus tectorum cheat grass Chenopodium botrys Jerusalem-oak goosefoot Cirsium vulgare bull thistle Hedera helix English Ivy Hypericum perforatum Klamath weed Lathyrus latifolius perennial sweet pea Leucanthemum vulgare Oxeye daisy Melilotus alba white sweet clover Melilotus officinalis yellow sweet clover Rubus armeniacus Himalayan blackberry Rubus laciniatus cut leaf blackberry Salsola tragus Russian thistle/tumbleweed Silybum marianum milk thistle Torilis arvensis hedge parsley Tribulus terrestris puncture vine Vinca major periwinkle

Group 4 (Manage through education and prevention): Species are well established across forest or have minor economic or ecological impacts. Forest will use appropriate prevention and education measures to limit further spread.

Bromus diandrus ripgut brome Bromus madritensis var. rubens red brome Conium maculatum poison hemlock Cynodon dactylon Bermuda grass Cynosurus echinatus spiny dogtail Dactylis glomerata Orchard grass Festuca arundinacea tall fescue Hirschfeldia incana mustard Lychnis coronaria rose campion/ mullein pink Sisymbrium altissimum Jim Hill mustard Verbascum thapsus mullein

Potential invasives: Species not yet found on the Eldorado National Forest. If found, infestations should be inventoried and targeted for eradication or control.

Cardaria chalepensis small whitetop Cardaria draba hoarycress Cardaria pubescens whitetop Carduus nutans musk thistle Carthamus lanatus Woolly distaff thistle Centaurea pratensis meadow knapweed Centaurea sulphurea Sicilian starthistle Cortaderia selloana pampas grass Dittrichia graveolens stinkwort Euphorbia esula leafy spurge Linaria genistifolia ssp. dalmatica dalmatian toadflax Linaria vulgaris yellow toadflax

Nicotiana glauca Tree tobacco Onopordum acanthium Scotch thistle Phragmites australis common reed Polygonum cuspidatum Japanese knotweed Polygonum sachalinensis Sakhalin knotweed Sesbania punicea Scarlet wisteria Tamarix chinensis Salt Cedar Tanacetum vulgare tansy Ulex europaeus Gorse