Hair grass, or tufted hairgrass, is a cool-season genus that generally requires full to partial sunlight and slightly acid, well-drained soil. Overwatering should be avoided, as it may lead to root rot. Common challenges include pest infestations (mainly aphids) and foliar diseases like rust. In spring, prune the plant to encourage fresh growth. As the temperatures rise in summer, ensure adequate hydration without waterlogging. No significant care changes are required for autumn. During the cold winter months, minimal watering is required.