Answer: Moss or algae tend to grow where the soil is infertile and/or compacted and/or quite acidic. If your plants are suited to the conditions and growing well, the moss may not really be a problem. However, to get rid of it you would need to change the conditions so they are no longer favorable for it to develop. Loosening the soil and adding organic matter can help with compaction and fertility issues. Using an organic mulch year round can also help. Check the soil pH and add fertilizer if indicated, also add lime as indicated by the test results to reduce the acidity. (Lime can shock your plants, and can damage acid-loving plants, so take that into consideration.) Finally, sometimes increasing the air flow and amount of sun that reaches the ground can limit it. (Again, sudden increased sun can shock plants that are not suited to higher light or not accustomed to it.) I hope this helps you trouble shoot.
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