Eastern Forest Threat Center - Browse Threats
Your search for California returned 133 threats in the following categories:

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THREAT
LATIN NAME
INVASIVE PLANTS   Back to Top
       Annual Bastard-Cabbage Rapistrum rugosum
       Arrow Bamboo Pseudosasa japonica
       Bigleaf Periwinkle Vinca major
       Bird's Foot Trefoil Lotus corniculatus
       Bittersweet Nightshade Solanum dulcamara
       Black Swallowwort Cynanchum louiseae
       Brazilian Peppertree Schinus terebinthifolius
       Brown Knapweed Centaurea jacea
       Bull Thistle Cirsium vulgare
       Butterfly Bush Buddleja davidii
       Canada Thistle Cirsium arvense
       Carolina Fanwort Cabomba caroliniana
       Cheatgrass Bromus tectorum
       Chinaberrytree Melia azedarach
       Chinese Elm Ulmus parvifolia
       Chinese Silvergrass Miscanthus sinensis
       Common Buckthorn Rhamnus cathartica
       Common Burdock Arctium minus
       Common Chickweed Stellaria media
       Common Mullein Verbascum thapsus
       Common Reed Phragmites australis
       Common Tansy Tanacetum vulgare
       Common Teasel Dipsacus fullonum
       Crown Vetch Coronilla varia
       Cutleaf Blackberry Rubus laciniatus
       Cypress Spurge Euphorbia cyparissias
       Cypressvine Morningglory Ipomoea quamoclit
       Dalmatian Toadflax Linaria dalmatica
       Dame's Rocket Hesperis matronalis
       Diffuse Knapweed Centaurea diffusa
       Dyer’s Woad Isatis tinctoria
       Elecampane Inula helenium
       Elephant Grass Pennisetum purpureum
       English Ivy Hedera helix
       Eurasian Water Milfoil Myriophyllum spicatum
       European Mountain Ash Sorbus aucuparia
       Field Bindweed Convolvulus arvensis
       Fountain Grass Pennisetum setaceum
       Giant Knotweed Polygonum sachalinense
       Giant Reed Arundo donax
       Glossy Privet Ligustrum lucidum
       Golden Bamboo Phyllostachys aurea
       Ground Ivy Glechoma hederacea
       Hairy Vetch Vicia villosa
       Hairy Whitetop Lepidium appelianum
       Houndstongue Cynoglossum officinale
       Hydrilla Hydrilla verticillata
       Japanese Bristlegrass Setaria faberi
       Japanese Honeysuckle Lonicera japonica
       Japanese Knotweed Polygonum cuspidatum
       Jimsonweed Datura stramonium
       Johnsongrass Sorghum halepense
       Kochia Kochia scoparia
       Leafy Spurge Euphorbia esula
       Medusahead Taeniatherum caput-medusae
       Moneywort Lysimachia nummularia
       Multiflora Rose Rosa multiflora
       Musk Thistle Carduus nutans
       Narrow-leaved Cattail Typha angustifolia
       Orange Hawkweed Hieracium aurantiacum
       Oxeye Daisy Leucanthemum vulgare
       Perennial Pepperweed Lepidium latifolium
       Poison Hemlock Conium maculatum
       Purple Loosestrife Lythrum salicaria
       Purple Star Thistle Centaurea calcitrapa
       Quackgrass Elymus repens
       Queen Anne's Lace Daucus carota
       Reed Canary Grass Phalaris arundinacea
       Ricefield Flatsedge Cyperus iria
       Rush Skeletonweed Chondrilla juncea
       Russian Knapweed Acroptilon repens
       Russian Olive Elaeagnus angustifolia
       Russian Thistle Salsola kali
       Saltcedar Tamarix ramosissima
       Scotch Broom Cytisus scoparius
       Scotch Thistle Onopordum acanthium
       Sheep Sorrel Rumex acetosella
       Shepherd's Purse Capsella bursa-pastoris
       Siberian Elm Ulmus pumila
       Silktree Albizia julibrissin
       Spiny Plumeless Thistle Carduus acanthoides
       Spotted Knapweed Centaurea biebersteinii
       St. Johnswort Hypericum perforatum
       Star-of-Bethlehem Ornithogalum umbellatum
       Sweet Autumn Virginsbower Clematis terniflora
       Sweet Cherry Prunus avium
       Tall Fescue Lolium arundinaceum
       Tallowtree Triadica sebifera
       Tansy Ragwort Senecio jacobaea
       Tatarian Honeysuckle Lonicera tatarica
       Tree-of-Heaven Ailanthus altissima
       Uruguayan Pampas Grass Cortaderia selloana
       Velvetleaf Abutilon theophrasti
       Weeping Lovegrass Eragrostis curvula
       Weeping Willow Salix x sepulcralis
       White Mulberry Morus alba
       White Poplar Populus alba
       Whitetop Cardaria draba
       Wild Garlic Allium vineale
       Wild Parsnip Pastinaca sativa
       Yellow Iris Iris pseudacorus
       Yellow Starthistle Centaurea solstitialis
       Yellow Sweetclover Melilotus officinalis
       Yellow Toadflax Linaria vulgaris
INSECTS   Back to Top
       Banded Elm Bark Beetle Scolytus schevyrewi
       Elm Leaf Beetle Xanthogaleruca luteola
       Fall Webworm Hyphantria cunea
       Nantucket Pine Tip Moth Rhyacionia frustrana
       Pear Thrips Taeniothrips inconsequens
       Pink Hibiscus Mealybug Maconellicoccus hirsutus
       Redhaired Pine Bark Beetle Hylurgus ligniperda
       Smaller European Elm Bark Beetle Scolytus multistriatus
       Walnut Twig Beetle Pityophthorus juglandis
DISEASES   Back to Top
       Armillaria Root Disease Armillaria mellea
       Diplodia Blight of Pines Sphaeropsis sapinea
       Littleleaf Disease
       Pitch Canker Fusarium circinatum
       Sudden Oak Death Phytophthora ramorum
       Thousand Cankers Disease Geosmithia sp.
       White Pine Blister Rust Cronartium ribicola
CLIMATE   Back to Top
       Climate Change
       Drought
       Flooding
       Ice Storms
LOSS OF OPEN SPACE   Back to Top
       Conversion
       Fragmentation
       Parcellation
POLLUTION   Back to Top
       Acid Deposition
       Ozone
       Salt Injury
WILDLAND FIRES   Back to Top
       Lack of Fuels Treatment
       Wildland Arson
UNMANAGED RECREATION   Back to Top
       Off-Highway Vehicles

The items above are part of an initial list of forest threats. These should not be interpreted as the top threats affecting forests in the Eastern U.S. We appreciate your feedback as additional forest threats are added to this page and as we work to further develop the forest threat summary viewer tool.