Saltcedar
(Tamarix ramosissima)
Deciduous shrub or tree averaging 15 feet but often taller. Abundant
near water sources. Uses far more water than native plant species
and impedes natives by concentrating salt near top of the soil.
Known to cause flood problems and reduce wildlife habitat.
Halogeton
(Halogeton glomeratus)
Annual herb usually 6-12 inches tall. Can quickly invade and prevent
native plants from returning to disturbed sites. Poisonous to livestock,
especially sheep.
White
horsenettle (Solanum elaeagnifolium)
Approximately 3 feet tall with prickly stems. It is known to harbor
various plant diseases and is toxic if eaten.
Yellow
starthistle (Centaurea solstitialis)
Can grow to 6 feet high, with large thorns. It is one of the most
serious rangeland weeds. Extremely hazardous to horses if eaten.
Dalmatian
toadflax (Linaria dalmatica)
Approximately 3.5 feet tall, broad-leaf perennial with yellow snapdragon-like
flowers. Pest insects are attracted to this plant which can then
injure other plants. Livestock tend to avoid this plant during grazing.
Russian
thistle (Salsola tragus)
An annual spherical shrub up to 5 feet high. Tolerates salty soils.
When mature, it detaches from its roots and becomes a “tumbleweed.”
Puncture
vine (Tribulus terrestris)
A flat-growing summer annual which produces burrs. This plant is
toxic to livestock.
Camelthorn
(Alhagi camelorum)
This green shrub grows rapidly, up to 4 feet high. The mature plants
have thorns and the leaves are thick and leathery.
Giant
reed (Arundo donax)
This bamboo-like plant can grow up to 30 feet high. It out competes
native species, destroying riparian habitat for birds and other
wildlife.
Sahara
mustard (Brassica tournefortii)
Abundant annual weed growing up to 3.5 feet high. Suppresses native
wildflowers and increases fire hazard in desert scrub.
Red
brome (Bromus madritensis)
Annual grass approximately 16 inches high. Competes with native
plants and promotes wildfires.
Fountain
grass (Pennisetum setaceum)
Perennial grass up to 5 feet tall with feathery flowerheads. Competes
with native plants and increases fire hazard.
Tree
of Heaven (Ailanthus altissima)
Deciduous tree 30-60 feet tall. Displaces native plants, especially
in riparian areas.
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