ENVS 605

What is it?

Field Bindweed is a non-native deep-rooted perennial that reproduces from seed and creeping, horizontal roots (rhizomes). Field bindweed stems are prostrate (grows low to the ground) and twining, and grow up to 6 feet long. Leaves are distinguishable by their arrowhead shape. The flowers are bell or trumpet-shaped, white to pink in color, and are about 1 inch long.

 

Why is it a problem?

Field Bindweed is a problem throughout Colorado as it is one of the most competitive perennial weeds. It is widespread in cultivated areas, pastures, lawns, gardens, roadsides, and waste areas from 4,000 to 8,000 feet in elevation. The number of seeds produced per plant ranges from 25 to 300 and seed production is variable depending on environmental conditions and the seeds can remain viable in the soil for up to 40 years.  Field Bindweed is an extremely difficult noxious weed to control because, in part, of its taproot that may go 20 feet deep into the soil, and which repeatedly gives rise to numerous long rhizomes.

 

Management techniques:

To successfully manage field bindweed, containment and persistence in controlling existing stands are necessary in order to exhaust the root system and deplete the soil seed bank. This weed needs to be continually stressed, forcing it to exhaust root nutrient stores and eventually die.

• Make sure to pull all of the roots including the horizontal roots. Bag the plants carefully so as to not scatter seeds if removed after flowering.

• Mowing, cutting, and pulling may be an option if done before the plants go to seed and repeated several times over multiple seasons resulting in a stressed plant.

• Herbicides can also control field bindweed but special care must be taken when using them. For more information visit www.colorado.gov/ag/csd and click on the Noxious Weed Management Program. Or call the State Weed Coordinator at the Colorado Department of Agriculture,Conservation Services Division,

303-239-4100.

The Bindweed Gall Mite, Aceria mahlerbae, has proven to be effective in reducing field bindweed infestations. This is an option for large infestations. To obtain a mite release, contact the Colorado Department of Agriculture, 970-464-7916.

 

What can we do?

Of all control methods, prevention is most important. Maintain healthy pastures and range land and continually monitor your property for new infestations. A healthy cover of desirable perennial plants will assist in discouraging field bindweed establishment, bare ground is prime habitat for weed invasions.

 

General Information on Field Bindweed:

• Colorado State University Extension

  • Website with general information on Field Bindweed.