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Rangeland-Pasture Recommendations Field Bindweed Identification and Management Field bindweed (Convolvulus arvensis) 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. Field bindweed seeds can remain viable in the soil for up to 40 years. Field bindweed emerges from its root system in the spring. Flowering occurs from June to September and until the first fall frost. The number of seeds ' produced per plant ranges from 25 to 300 and seed production is variable depending on environmental conditions. Field bindweed is an extremely difficult noxious weed to control because, in part, of its root that may go 20 feet deep into the soil, and which repeatedly gives rise to numerous long rhizomes. Arrowhead- shaped teaf Flowerhead Field bindweed is a problem throughout Colorado. 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. To successfully manage field bindweed,containment and persistence in controlling existing stands are necessary 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. Of all control methods, prevention is most important. Maintain healthy pastures and rangeland and continually monitor your property for new infestations. A healthy cover of desirable perennial plants will assist in discouraging field bindweed establishment. On the backside of this sheet are field bindweed management recommendations. If you have any questions or would like more information, please contact the Weld County Public Works Department,Weed Division at (970) 304-6496 ext 3770. Please visit our website www.weldweeds.org.