Used coffee grounds can greatly benefit gardens by providing essential nutrients, particularly for plants that thrive in slightly acidic to neutral soils, such as tomatoes and lettuce. However, not all plants will appreciate coffee grounds. Plants that prefer alkaline conditions, notably garlic and asparagus, should be kept away from coffee grounds, as they can disrupt their growth. Additionally, coffee grounds may not be suitable for nitrogen-sensitive crops, particularly root vegetables, which need a different balance of nutrients to thrive without excessive leaf growth.
Coffee grounds are a good source of nutrients for fertilizing plants, especially those preferring acidic to neutral soil, but not all plants thrive with them.
While coffee grounds are nutrient-rich, they can harm nitrogen-sensitive crops. Avoid using them on crops like root vegetables that require balance in plant growth.
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