Watch List
The
Colorado Watch List
consists of 22 species that have been determined to pose a potential threat to the agricultural productivity and environmental values of the lands of the state and require careful observation. Many species included on this list are not yet known to occur in the state but have been recognized as noxious or problematic by another state or states in the region. For the included species that do occur in Colorado, more information is needed about the distribution and effect on agricultural and natural lands in the state.
If you find a population of one of the Watch List species, please fill out the Spotter Form.
| Watch List Species | |||||||
|
Asian mustard |
Baby's breath |
Bathurst burr/ |
Common bugloss |
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|
Common reed |
Flowering rush |
Hairy willow-herb |
Himalayan blackberry |
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|
Japanese blood grass/ |
Meadow hawkweed |
Onionweed |
Purple Pampasgrass |
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|
Scotch broom |
Sericea lespedeza |
Swainsonpea |
Syrian beancaper |
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|
Water hyacinth |
Water lettuce |
White bryony |
Woolly distaff thistle |
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|
Yellow flag iris |
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