Field 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
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
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.
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.
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
returned bindweed growth with an approved systemic herbicide after the
first frost in the fall, but before nighttime temperatures reach 20°F.