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Weed Identification |
Canada Thistle
Stems: 1-4 ft tall, erect, rigid, branching.- Leaves: sessile, deeply lobed, edged with stiff yellow spines.
- Flowers: many, 1/2-inch flowering heads, male and female flowers borne on different plants. Flowers purple lavender, or white, with overlapping, weakly spine-tipped bracts. Flowers in July and August.
- Seeds: 1/8th-inch long, somewhat flattened, tan, with an apical circle of long hairs.
Canada thistle is a perennial that grows from a deep, complex root system. The roots spread horizontally and send up new stems, forming dense colonies. It grows in a wide range of soils and environmental conditions. It is aggressive, spreading by root and seed. The deep root system makes it difficult to control.
Control: An integrated system must be used for many years to control this pest.
- Biological: Competition with grasses and alfalfa is effective, as are seedhead weevils, and the painted lady butterfly. A three-year intensive cattle grazing program has proved effective in southwestern Colorado.
- Chemical: Fall treatments, combined with mowing, are effective. Get in touch with your local weed control office for the latest information on controlling this pest.
- Mechanical: Mowing can be effective, if combined with herbicide application. Plowing increases plant numbers and should be avoided.
Source: USDA Forest Service
Contact Information
General contact information for the Butte-Silver Bow Courthouse.
Postal address:
155 West Granite Street
Butte, MT 59701
Telephone: (406) 497-6200
FAX: (406) 497-6328
Chief
Executive Paul Babb
The governments of the city of Butte and Silver Bow County combined in 1977.
The government is lead by the Chief
Executive, Paul Babb and a 12-member
Council of Commissioners.
The Butte-Silver Bow Courthouse Centennial
The gala celebration of the Butte-Silver Bow Courthouse centennial will cover five days of events culminating in the official re-dedication of the Courthouse on July 4, 2012. Follow the planning process on our blog or Facebook page.
Our Office hours are 8am to 5pm (with the exception of the Treasurer's office) with no noon closure.
The Treasurer's office is open 8am to 5pm for all matters (including tax payments). State Motor Vehicle Licensing is open 8:30 am to 4:30 pm.
Essential Public Works Services, (water, sewer, and road maintenance) are available 24 hours, seven days a week.
- To report a water problem, dial 497-6540;
- A sewer problem, 497-6550;
- A road maintenance problem, 497-6565;
- An animal control problem, 782-4467.