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Coffee grounds - Free fertilizer for outdoor and potted plants!

Coffee grounds - Free fertilizer for outdoor and potted plants!


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Coffee grounds do not belong in the garbage can, at most on the compost. It is even better if you use the coffee grounds as a free fertilizer. Your plants will definitely be happy, and so will your wallet.

In countless households, fresh coffee grounds are often carelessly disposed of in the garbage every day, even though it is a high-quality fertilizer for outdoor and potted plants.

Even the coffee pods that are now frequently used and a large part of all coffee filter bags can still be converted to fertilizer on the compost.

tip: Open coffee grounds can always be incorporated directly around the plants! Obtainable by brewing the coffee in countless coffee machines.

Coffee grounds are so nutritious

The coffee grounds are a practically free, absolutely environmentally friendly fertilizer that is available daily in many places and is also rich in nutrients, such as. B.

  • potassium
  • nitrogen
  • Phosphorus.

Furthermore, coffee is considered to be slightly "acidic". B. can be significantly reduced with bog soil. The coffee grounds also neutralize extremely calcareous irrigation water and keep some pests away from the plants.

tip: Earthworms also love coffee grounds! They are almost magically attracted to it and their presence loosens the soil in the beds in an optimal way!

Application tips for coffee grounds as fertilizer

  • Let the coffee grounds cool down first
    Always let the coffee grounds cool down before dispensing - never use them hot! The coffee grounds should also be applied as dry as possible, since wet coffee grounds tend to form mold quickly. Therefore, simply store fresh coffee grounds in an open container for a short time!
  • Do not fertilize too often
    The frequency of fertilization with coffee grounds depends on the respective plant species, but should not be exaggerated - e.g. B. Fertilize houseplants once in winter and once in spring, outdoor plants on average up to 4 times a year. However, you cannot over-fertilize with coffee grounds, which means that the hobby gardener is always on the right side with a fertilizer such as coffee grounds.
  • Mix coffee grounds with potting soil
    If coffee grounds are collected over a period of time, they can be mixed with fresh potting soil and the plants can be potted in them.
  • Work in well outdoors
    Or the coffee grounds are sprinkled thinly in the flower pots or around the outdoor plants and worked in a little with a small rake on the surface.
  • Dilute the coffee grounds with water
    Furthermore, small amounts of coffee grounds can also be diluted with plenty of water and watered on the house plants. The gardener should not water the leaves, but only fertilize the plant stem.
  • Leftovers belong on the compost
    Other coffee grounds can also be disposed of on the compost - then mix the compost well again before use!
  • Coffee grounds as an ant killer
    Coffee grounds also protect plants from ants that do not like the smell of coffee and therefore usually stay far away from the plants fertilized with them.

tip: Coffee grounds are particularly popular with roses, rhododendrons, azaleas, fuchsias, geraniums, hydrangeas, berries, tomatoes, cucumbers, pumpkins and zucchini, etc.

By the way:

Coffee grounds are also carelessly disposed of in many restaurants. It can therefore be worthwhile if you ask there whether you can collect the coffee grounds regularly!