How to get rid of moss and algae on soil?
How to Rid Moss and Algae of Soil
Certified GKH Gardening Expert
Various types of algae and moss are often found in areas of turf that is not healthy enough to support good turf growth. Algae thrive in areas where there is wet soil and full sunlight. Algae may also be present if the soil is densely compacted, when there are open spots in the turf or a very high fertility present.
The first step to lawn algae control is to identify the problem areas. Often poor drainage, improperly positioned downspouts on the home or low areas in the lawn create a favorable environment for algae growth. Redirect downspouts and address other problems with drainage so that water does not sit in certain areas of your lawn. It is also necessary to break apart the algae mat so that the grass can benefit from water. Take a soil test from healthy areas in the lawn and those that are affected with algae. The soil sample will reveal if you need to apply fertilizer or lime to your lawn. It may also be necessary to loosen up compacted areas in the lawn.
For serious cases of algae, make a mixture of 5 ounces of copper sulfate and 3 gallons of water per 1000 square feet of turf.
For help with moss, read this article: https://www.gardeningknowhow.com/ornamental/foliage/moss/killing-moss.htm