I want to fertilize my plants with "kitchen waste" instead of chemicals. How do I use coffee grounds for hydrangeas if used grounds are not acidic enough?
Hardiness Zone: 7a
Dorothy from Munford, TN
Used coffee grounds can be spread around your hydrangeas in small amounts and gently mixed into the topsoil, or composted along with other kitchen waste and added to your soil later.
Used coffee grounds are still beneficial to your hydrangeas. Here is why:
One thing to keep in mind is that like any organic waste from the kitchen, as coffee grounds decompose, they are likely to tie up a small amount of nitrogen in the soil-making it inaccessible to your plants. How much that affects your hydrangeas depends on how much of the grounds you have incorporated into the soil. In general, a small amount of coffee grounds dug gently into the topsoil around your hydrangeas is probably just fine. Nevertheless, an even better way to utilize it would be to start a backyard compost pile for all of your kitchen waste.
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The local starbucks saves coffee grounds for gardeners...Just ask. They are on the back step in huge garbage bags. I add them to my compost to keep it sweet smelling! The coffee filters break down quickly!
Were you thinking of using coffee grounds that were not used? that would be the most shockingly expensive plant food, I would think!
Used coffee grounds and tea bags are great for hydrangeas, azaleas, and rhododendrons. Just put them on the soil under the plant. It may take several months for the grounds to get worked down into the soil and for worms to find it. Be patient. Good job.
I was told years ago to place a used SOS pad, (Brillo pad also works) in the soil around the plant. I cut the used pads into quarters and placed around the plant evenly. Be careful when placing anything in the soil around a plant that you do not disturb the roots. Always try to add before planting.The results were great ! Something about iron content. I just know it works and works better than coffee grounds. I save my coffee grounds and egg shells for my roses.
If you are a coffee drinker, just use the used grounds after you are done making coffee. They also work well to take odors out of the refrigerator. If you don't drink coffee, see if a neighbor would be willing to give you theirs. No sense in wasting good coffee.
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