Digitaria ischaemum, also known as smooth crabgrass or small crabgrass, is a common weed found in lawns and gardens. Some of the synonyms for Digitaria ischaemum include hairy crabgrass, large crabgrass, and summer grass. Though it is often viewed as a pesky nuisance, the weed has been used in traditional herbal medicine to treat various ailments such as diarrhea and inflammation. To prevent the growth and spread of Digitaria ischaemum, it is important to maintain a healthy lawn and garden through regular mowing and watering. There are also different techniques and products available for removing and controlling the weed, such as using herbicides or applying natural remedies.