AT A GLANCE
Coffee grounds are very suitable for fertilizing hydrangeas. The ingredients it contains such as potassium, nitrogen, phosphorus and tannic acid contribute to healthy plant growth and at the same time lower the pH value of the soil. Coffee grounds can either be incorporated into the soil or added via the irrigation water.
Are coffee grounds suitable as fertilizer for hydrangeas?
coffee grounds is an ideal fertilizer for many plants, including hydrangeas. Since coffee grounds are a waste product in almost every household, this is home remedies an always available and free natural fertilizer.
Coffee grounds are particularly suitable for hydrangeas because, in addition to the minerals they contain, they have the property of slightly lowering the pH value of the soil. Hydrangeas grow better in acidic soil and therefore benefit particularly well from fertilizing with coffee grounds.
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What nutrients does coffee grounds contain?
Hydrangeas are supplied with the following ingredients by fertilizing with coffee grounds:
- potassium supports cell structure and contributes to the formation of impressive flowers
- Nitrogen promotes vigorous leaf growth
- phosphorus and tannic acid have a positive effect on the pH of the soil by lowering it
The caffeine it contains also acts as a natural defense against pests, since snails, for example, avoid caffeine.
How do you fertilize hydrangeas with coffee grounds?
When fertilizing with coffee grounds, the following procedure is recommended:
- Leave the coffee grounds completely cooling down, before processing in order not to damage the roots of the hydrangea.
- Distribute Spread the coffee grounds around the bushes over a large area.
- Work the coffee grounds with a rake carefully in the potting soil a.
- Pour your hydrangeas so they can quickly absorb the nutrients from the coffee grounds.
Alternatively, you can also put the coffee grounds directly into the irrigation water and use them to water your hydrangeas. Pouring with diluted coffee is also an option. Make sure that you always water the shrubs from below so that the leaves and flowers remain dry.
How often should you fertilize hydrangeas with coffee grounds?
In contrast to fertilizer offered in specialist shops, the ingredients in coffee grounds are relative low dose, so that an overdose can be almost completely ruled out. It is recommended to mist hydrangeas with coffee grounds about four times a year as indicated above fertilize.
Tip
Coffee grounds are not suitable for potted hydrangeas
If you cultivate hydrangeas in pots, you should fertilize them very sparingly with coffee grounds or do without them altogether. Since it cannot be worked into the soil so well in the pot, the risk of mold growth is increased.
