Field burrweed

Soliva sessilis, commonly known as lawn burweed or field burrweed, is an annual weed belonging to the Asteraceae family. Native to South America, it has become a widespread and troublesome weed in lawns and turf areas in various regions. Here is information about Soliva sessilis:

Lawn Burweed Characteristics:

• Growth Form:

  • Lawn burweed is a low-growing annual weed that can form dense mats.

• Leaves:

  • The leaves are finely divided, giving them a fern-like appearance.
  • Each leaflet typically has a spiny tip.

• Flowers:

  • The plant produces small, inconspicuous flowers.
  • Flowers are followed by seed heads that consist of burr-like structures.

• Burr-Like Seed Heads:

  • One of the distinctive features of lawn burweed is the presence of small, spiny seed heads or burrs.
  • These burrs can be painful when stepped on, making the weed a nuisance in lawns.

• Habitat:

  • Lawn burweed is commonly found in lawns, turfgrass, and open areas with well-drained soil.

• Germination:

  • Germination usually occurs in late fall or early winter.

• Control Measures:

  • Pre-emergent herbicides applied in late summer or early fall can help prevent the germination of lawn burweed seeds.
  • Post-emergent herbicides can be used to control established plants.
  • Hand pulling or mechanical removal may be effective for small infestations.

• Impact on Lawns:

  • Lawn burweed can be problematic for lawns as it competes with desirable grass species and creates discomfort due to its spiny seed heads.