What indoor and outdoor plants like coffee grounds?
Acidic-loving plants such as azaleas, blueberries, hydrangeas, rhododendrons, and roses will benefit from a sprinkling of coffee grounds around the base of plants. Popular plants such as azaleas, rhododendrons, blueberries, strawberries and heathers, are all acid-loving, meaning they need a soil pH of about 5.Soil pH determines how easily your plants can take up nutrients from the soil around them. While many garden plants are adapted to a fairly wide range, certain plants—like azaleas, rhododendrons, hollies, and blueberries—are fussy about having acidic soil.Blueberries, azaleas, and rhododendrons love acidic soil. Vinegar is a great soil amendment for them. Mix one cup of vinegar with one gallon of water for a gentle pH drop. Use this solution monthly on acid-loving plants during the growing season.Popular plants such as azaleas, rhododendrons, blueberries, strawberries and heathers, are all acid-loving, meaning they need a soil pH of about 5.
Which plants should I not put coffee grounds on?
However, there are some plants that you should avoid using coffee grounds on. Plants that prefer alkaline soil, like lavender and lilacs, can be harmed by the acidity of coffee grounds. Plants that are sensitive to caffeine, such as geraniums and some herbs, can also be affected by the presence of coffee grounds. Acidic-loving plants such as azaleas, blueberries, hydrangeas, rhododendrons, and roses will benefit from a sprinkling of coffee grounds around the base of plants. Vegetable crops that may benefit from coffee grounds include carrots, cucumbers, peppers, potatoes, and radishes.Lavender, rosemary, thyme and other mediterranean herbs prefer well-drained, slightly alkaline soil and dislike the acidity coffee grounds bring. Similarly, tomatoes may suffer if the grounds are added directly, especially in large quantities, as it can disrupt ph and introduce too much nitrogen.
Why are people leaving coffee grounds on their porch?
Instead of throwing spent coffee grounds in the trash, some homeowners leave piles or lines of coffee grounds around their gardens and homes to keep flies, mosquitoes, and other pests away. Coffee grounds are also often used to deter slugs and snails, reduce weeds without chemicals, and even repel neighborhood strays. Snails and slugs hate caffeine and it repels them. You can just sprinkle them in your flower beds, garden, etc. My roses seem to like them. Chipmunks and Squirrels do Not like coffee grounds.