Lawns are a challenge. They need fertilizer, weed control and water. Chemical fertilizers routinely contain phosphorus, which is a watershed pollutant, adding to overgrowth of algae and choking out other aquatic life. These substances also deplete the soil, making grass chemical-dependent. Below are some tips to make your garden more environmentally friendly. Click here for tips from a Lake County group called the Librerty Prairie Conservancy.