Plant Profile: Cenchrus longispinus

Mat Sandbur is a summer annual grass characterized by its loosely clustered, branching stems, known as culms, which can reach lengths of up to 2.5 feet. Under specific conditions, it may also behave as a biennial or perennial plant. Additionally, it is classified as a winter annual, meaning it can complete its life cycle within a year, including a winter phase.

From its base, multiple culms emerge, either sprawling along the ground or growing upright. In its natural environment, Mat Sandbur thrives in sandy areas, abandoned fields, and recently disturbed sites.

Its invasive and aggressive nature is exacerbated by the burs, which can cling to the fur of animals and the clothing of people, facilitating its spread to new areas. The burs can also attach to vehicle tires or be transported by rainwater, and additional rooting can occur where the nodes make contact with the soil.

The primary flower stalk is wavy, with each spike typically housing between 40 to 50 burs, all encased within a leaf sheath.

Mat Sandbur often forms extensive mats and can grow up to 2 feet in length.

In terms of pests and diseases, this plant is known for its invasive tendencies. The burs can cause skin irritation when they dry out, and farm animals grazing in areas where Mat Sandbur is present may suffer injuries to their mouths and eyes.