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Bindweed
BindweedField Bindweed · Convolvulus arvensis L. · is a perennial broad-leaved plant that spreads over the soil and other structures, and often form mats. Leaves alternate along the stem. Leaf size and shape will be varied; typically leaves are up to two inches long and egg-shaped.

Flowers are typically white, but often they are light pink and have two leaf-like structures half-way between the main stem and the base of the flower, which is a distinct characteristic.The flowering stage is when most field bindweed is noticed.

The root system is what makes the weed so hard to control. Roots can extend to as far as 30 feet deep. These roots compete with crops for moisture and nutrients, and give field bindweed an advantage over the newly seeded crops by already being in the soil.

Seed pods are egg-shaped, 1/4" in diameter, and contain two to four seeds. Seeds are shaped like a slice out of an orange, small (only 1/8" long), and covered by rough raised dots. Though small, these seeds can lay dormant for as long as 30 years.

Specific Control

Field Bindweed is a noxious weed that can be a severe problem in the largest field or the smallest garden. A summer herbicide treatment will control existing growth and eliminate seed production. For lasting control, a three-phase treatment plan should begin at first blooming and continue through fall:

Phase I
Treat Field Bindweed with an approved herbicide or control measure shortly after flowering blooms appear.
Phase II
Retreat new bindweed growth approximately 30 to 45 days after the initial treatment or when 12" - 18" runners exist.
Phase III
Retreat returned bindweed growth with an approved systemic herbicide after the first frost in the fall, but before nighttime temperatures reach 20°F.


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