Posted on August 5, 2021 at 8:55 AM by Alicia Doran
Each month we will provide a work plan for the noxious weeds that are active. To find out more about each weed visit our website jeffco.us/jcism
| Weed | Stage | Action | Plant Info | Notes |
|---|
| Canada thistle (option 1) | Flowering, dropping seed | Clip, bag, and put into trash | Perennial
Deep spreading roots
Reproduces by seed and spreading roots | Do NOT pull. Pulling breaks the root and creates new plants.
The majority of the seeds are sterile. Most seed drops near the mother plant |
| Canada thistle (option 2) | Flowering, dropping seed | Treat plants with herbicide |
|
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| Canada thistle (option 3) | Flowering, dropping seed | Mow and follow up with herbicide treatment in 1 month |
|
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| Chamomile | Flowering, dropping seed | Remove, bag, put into trash | Perennial
Fibrous roots
Reproduces by seed |
|
| Common mullein | Flowering, dropping seed | Remove, bag, put into trash | Biennial
Taproot
Reproduces by seed | This is not the time of year to treat Common mullein with herbicide.
Next year plan on doing your removal in the spring and early summer before the flowerbuds form (when plants are less than 12 inches tall) |
| Diffuse knapweed | Flowering, dropping seed | Remove, bag, put into trash | Biennial
Taproot
Reproduces by seed |
|
| Hairy willowherb | Flowering, dropping seed | Treat plants with herbicide | Perennial
Spreading roots
Reproduces by seed and spreading roots |
|
| Knotweed | Flowering, dropping seed | Treat plants with herbicide | Perennial
Spreading roots
Reproduces by seed, spreading roots, and plant fragments |
|
| Musk thistle | Flowering, dropping seed | Remove flowers, bag, put into trash | Biennial
Taproot
Reproduces by seed | This is not the time of year to treat Musk thistle with herbicide.
Next year plan on doing your removal in the spring and early summer before the flowerbuds form (when plants are less than 12 inches tall) |
| Oxeye daisy | Flowering, dropping seed | Remove, bag, put into trash | Perennial
Fibrous roots
Reproduces by seed |
|
| Purple loosestrife | Flowering, dropping seed | Treat plants with herbicide | Perennial
Deep spreading roots
Reproduces by seed, spreading roots, and plant fragments |
|
| Teasel | Flowering, dropping seed
| Remove flowers, bag, put into trash
| Biennial
Taproot
Reproduces by seed
| This is not the time of year to treat Teasel with herbicide.
Next year plan on doing your removal in the spring and early summer before the flowerbuds form (when plants are less than 12 inches tall)
|
| All Others | Map the locations and create a management plan for fall |