Yes, Natural Guard HuMic Granular Humic Acid is a soil amendment for lawns, vegetables gardens, flowerbeds, indoor plants and compost bins. The label states:
FOR ESTABLISHED LAWNS:
Apply 10 lbs. per 1,000 square feet of lawn area in early spring and again in late fall along with normal lawn fertilization program. Soils low in organic matter will respond better to application rates of 20 to 30 lbs. per 1,000 square feet. Water in after application.
Natural Guard HuMic Granular Humic Acid should be applied with a spreader and then watered in following the application. Natural Guard HuMic Liquid Humic Acid concentrate is diluted with water and applied as directed on the product label.
If you have already applied a fertilizer, then Natural Guard HuMic Granular Humic Acid can be applied alone per the product label instructions.