To use seaweed extract, dilute it with water according to the manufacturer’s instructions, typically at a ratio of 1-2 tablespoons per gallon of water. Apply the solution every 2-4 weeks during the growing season. Seaweed extract is particularly beneficial for improving plant resilience to environmental stresses such as drought, heat, and disease.
8. Coffee Grounds: A Sustainable Acidic Option
Used coffee grounds are a great source of nitrogen and can help improve soil structure and drainage. They are slightly acidic, making them an excellent choice for acid-loving plants like blueberries, azaleas, and rhododendrons.
To use coffee grounds, sprinkle them around the base of plants or mix them into the soil at a rate of 1 cup per square foot. Coffee grounds can also be added to compost piles to boost nitrogen content. They are a sustainable option for gardeners looking to recycle kitchen waste while enriching their soil.
9. Green Manure: Cover Crops for Soil Health
Green manure refers to cover crops that are grown specifically to be tilled back into the soil to improve its fertility and structure. Common green manure crops include clover, vetch, rye, and buckwheat. These plants fix nitrogen, suppress weeds, and prevent soil erosion.
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