Bindweed Official Control Program Description Field bindweed, a perennial, reproduces by seeds and rootstocks. The root system is extensive, extending to a depth of 20 to 30 feet. The smooth, slender stems twine or spread over the soil and vegetation. Leaves up to 2 inches long are alternate, simple, petioled, quite variable in size, and highly variable in shape. The leaf blade may be oblong to elliptical or may be rounded to pointed with spreading basal lobes.
Flowers are white, pink, or white with pink.
Funnel shaped, they are about 1 inch across and usually borne singly in the axils of leaves. How to Reduce New Bindweed Infestations Field bindweed is spread both by seed and by roots. New field bindweed infestations result from planting crop seed contaminated with bindweed seed or from portions of bindweed roots transported by tillage machinery. Harvesting equipment, manure from livestock fed contaminated feed, and grazing animals moved from infested to clean areas also cause new bindweed infestations. Bindweed seed is also carried in drainage water.