Which plants benefit from coffee grounds in pots?
Acidic-loving plants such as azaleas, blueberries, hydrangeas, rhododendrons, and roses will benefit from a sprinkling of coffee grounds around the base of plants. How Often Should You Add Coffee Grounds to Plants? You can fertilize houseplants an average of 7 to 10 days in a row, but no more, as there is a risk of over-acidification of the soil. A cup of ground coffee should be added to the compost once a week.Coffee grounds are best at improving soil. As the coffee grounds feed the soil microbes, microbial glues are released that promote good soil structure and improve drainage. When using coffee grounds as a soil amendment, brewer recommends working in a half inch to a depth of 4 inches.Coffee grounds are rich in nitrogen, which helps plants grow strong and healthy when added to soil or compost. Add coffee grounds to your compost, or spread dry coffee grounds directly on your lawn or garden each month to slowly nourish plants and improve soil quality.Compost your coffee grounds This is perhaps the easiest way to avoid putting your coffee grounds in the general waste bin. Used coffee grounds are great for compost as they add nitrogen that helps organic materials break down into mulch and, eventually, nutrient-rich fertilizer.
What hates coffee grounds?
Not ALL plants love coffee grounds. While coffee grounds work wonders for some plants, others—like lavender, rosemary, and succulents—can suffer from the acidity and moisture retention. If, however, you’re adding coffee grounds directly to plant soil, you should do so less frequently to avoid the soil becoming too acidic. Once or twice during your plant’s active growth season is recommended.Coffee grounds contain caffeine, which can be harmful to some plants. Caffeine acts as a natural pesticide, which can inhibit growth, particularly for seedlings and young plants. This is especially true for plants that are sensitive to caffeine and tolerate acidic soil poorly.