Common mouse-ear

Common mouse-ear (Latin: Cerastium fontanum) is a herbaceous perennial belonging to the Caryophyllaceae family. It is recognized by its creeping, mat-forming stems that root at the nodes, allowing it to spread aggressively across fields. This growth habit enables the plant to colonize disturbed soil and pastures effectively.

This weed is found in a variety of environments, including grasslands, pastures, gardens, and agricultural fields. It is particularly troublesome in winter crops and perennial meadows, where it thrives in moist, nutrient-rich soils. Due to its competitive nature, it can rapidly colonize bare spots in a crop stand, robbing the desired plants of essential space and nutrients.

The biology of Cerastium fontanum is defined by its ability to reproduce both through seed production and vegetative spread. The plant flowers from late spring through autumn, producing numerous seeds that can persist in the soil seed bank for several years. Its shallow, tenacious root system makes manual removal difficult, especially in large-scale farming operations.

The economic impact of the common mouse-ear lies in its interference with crop development. By forming dense mats, the weed competes for moisture and nitrogen, significantly reducing the yield of cereals and the quality of forage in meadows. It also acts as an alternative host for various agricultural pests and pathogens that can damage primary crops.

Strategies for management and control include:

• Integrated tillage programs to disrupt the mat-like growth habit.
• Application of selective systemic herbicides during the early growth stages of the weed.
• Cultural practices such as maintaining optimal soil fertility to boost crop vigor.
• Timely mowing to prevent the formation and dispersal of seeds in pasture and non-crop areas.