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Getting rid of nostoc in a yard requires a combination of removal techniques and environmental adjustments. Start by physically removing the visible nostoc mats using a rake, shovel, or by hand. After removing the bulk of the growth, you can treat the area with a herbicide that targets cyanobacteria or algae, which can effectively kill the remaining nostoc. Natural methods such as using a diluted vinegar solution or hydrogen peroxide are also options for disrupting the growth. In addition to these treatments, it is essential to manage the environmental factors that encourage nostoc growth. Ensuring proper lawn drainage, reducing overwatering, and eliminating areas of standing water will help prevent the conditions that favor nostoc. Regular maintenance, such as lawn aeration and removing excess organic matter, will also improve overall yard health and reduce nostoc proliferation.