Field burrweed

Soliva sessilis, commonly known as lawn burweed, is an annual herbaceous plant belonging to the Asteraceae family. Native to South America, it has become an invasive weed in various parts of the world, particularly in lawns and disturbed areas. Here's a detailed description of Soliva sessilis:

Description:

• Habitat: Lawn burweed is commonly found in lawns, pastures, and other disturbed areas. It prefers well-drained soils and can tolerate a range of environmental conditions.

• Growth Form: This plant typically grows low to the ground, forming a prostrate mat. It can reach heights of 5 to 15 cm.

• Leaves: The leaves are finely dissected, giving them a fern-like appearance. They are arranged oppositely along the stems and have a distinctive shape.

• Flowers: The flowers are small, inconspicuous, and greenish. They are borne in clusters and lack showy petals.

• Fruits: The fruit is a burr-like structure containing seeds. The burrs have spines that can cause discomfort when stepped on.

Identification Features:

1. Prostrate Growth Habit: Lawn burweed forms a low, prostrate mat close to the ground.

2. Finely Dissected Leaves: The leaves are deeply divided, giving them a fern-like or lacey appearance.

3. Burr-Like Fruits: The fruits are small, burr-like structures with spines.

Blooming Period:

• Lawn burweed typically flowers in late spring to early summer.

Ecological Impact:

• Lawn burweed is considered an invasive weed in lawns and turfgrass areas. The spiny burrs can cause discomfort to humans and animals.

Management:

• Control measures for lawn burweed in lawns may include herbicide applications, proper lawn maintenance, and removal of plants before they produce seeds.