The hill is covered in poison ivy and invasive plants such as wineberry. These fastgrowing weeds block sunlight from reaching other plants, stunting their growth. They also disturb birds’ nesting sites and reduce water availability.
The goats eat the weeds down to their roots again and again. After several weeks, the weeds weaken and stop spreading. “The goats love eating poison ivy,” says Laura Heckman, who works for Riverside Park Conservancy. The goats’ droppings also add nutrients to the soil, making it healthier for native plants