Are Coffee Grounds Good for Plants or Not?
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Are Coffee Grounds Good for Plants or Not?
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This Episode examine the diverse impacts of repurposing coffee grounds in gardening, agriculture, and waste management. While grounds provide essential nutrients like nitrogen and attract beneficial earthworms, they can be harmful to acid-sensitive plants, seeds, and young seedlings due to residual caffeine. Research highlights caffeine’s allelopathic properties, which can inhibit the growth of certain weeds and pathogens but may also disrupt soil bacteria and prove toxic to pets. Experts generally recommend composting grounds before use to stabilize pH levels and reduce chemical intensity. Furthermore, the text explores specialized applications, such as using grounds to foster predatory fungi or as a substrate for edible mushroom cultivation. Individual gardening experiences emphasize that while coffee waste is a valuable organic resource, its effectiveness depends on the specific needs of the local ecosystem.
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