Are used coffee grounds good for indoor plants 2024?
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Studied at the University of Zurich, Lives in Zurich, Switzerland.
Coffee grounds acidify soil slightly, so although that may benefit gardenias and azaleas, which prefer acidic soils, it won't help an African violet. Cooled vegetable cooking water is fine to add to houseplants. Do so in moderation. Reuse only unsalted cooking water; salty water could burn your plants.
2023-04-24 03:30:39
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Sophia Lee
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Coffee grounds acidify soil slightly, so although that may benefit gardenias and azaleas, which prefer acidic soils, it won't help an African violet. Cooled vegetable cooking water is fine to add to houseplants. Do so in moderation. Reuse only unsalted cooking water; salty water could burn your plants.