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Are Coffee Grinds Good for Gardenias?
Are Coffee Grinds Good for Gardenias?. Gardenias prefer acid soil and won't grow well in alkaline soil. If your soil is alkaline, either grow gardenias in pots or add amendments to garden soil to improve the pH to more acidic levels.
Gardenias prefer acid soil and won't grow well in alkaline soil. If your soil is alkaline, either grow gardenias in pots or add amendments to garden soil to improve the pH to more acidic levels.
Organic Matter
Coffee grinds improve the soil because when they decompose they add organic matter to the soil. Gardenias prefer rich, well-drained soil.
Acidity
Coffee grinds are acidic. If you've ever drunk too much coffee, besides getting wired, your stomach may have become upset because of the acid in the coffee. Adding coffee grinds to the soil around a gardenia improves the acidity of the soil.
Natural Fertilizer
Besides being acidic, coffee grinds contain nitrogen, magnesium and potassium, all necessary nutrients for gardenias. Add the coffee grinds directly to the soil. Every time the gardenia is watered the coffee will percolate down to the roots.
