Coffee grounds as fertilizer
Since coffee grounds contain valuable ingredients such as
- Potassium (cell structure and stability),
- nitrogen (leaf growth),
- Phosphorus (flowering and fruit ripening)
- tannic acid,
- antioxidants
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contains, it is well suited for soil improvement. Especially plants that have a sour garden floor prefer, benefit from the coffee grounds fertilization.
Since it is not worth running into the garden with every coffee filter or puck, it is advisable to first collect the coffee pomace in a large, open container. The drying of the coffee grounds[/link] also prevents the formation of mold.
How is the coffee grounds fertilizer applied?
- Scatter a handful of coffee grounds around the root area of the plant.
- Work the powder into the soil with a hoe.
- If you apply an additional layer of mulch, you support the effect of the fertilizer.
Not all plants like coffee grounds
Plants that thrive on calcareous soil are usually not very acid-tolerant and should therefore not be fertilized with coffee grounds. These include, for example:
- chrysanthemum,
- Gladiolus,
- bluebell,
- (ornamental) cabbage,
- Poppy,
- Parsely,
- Rose,
- Tulip.
Small amounts of coffee powder do not harm these plants, but the hoped-for fertilizing effect is then also negligible.
Don't snails like coffee?
It is possible that scattered coffee grounds will do well and the snails will turn to other plants. Have slugs However, she has a big appetite and the brown powder and the nerve toxin caffeine it contains can hardly stop her.
As studies have shown, the caffeine content in cooked coffee powder is also not sufficient to harm the animals, as it is only 0.06 to 0.1 percent. A caffeine content of about one percent would be effective.
To get this, you would have to brew very strong coffee and spray it several times. Disadvantage: This brew is also poisonous for beneficial organisms such as snails, earthworms and insects. In addition, the growth of the plants can be impaired.
Tip
Putting coffee grounds on top of the compost accelerates decomposition. Mix some soil with the used powder and sprinkle the mixture in a thin layer over the compost. This prevents harmful mold from growing in the large, wet clumps of coffee.