Coffee drinkers don't miss these few lines. Instead of throwing away your coffee grounds, use them in your garden, your plants will thank you! If you don't drink coffee, you can still get it at the local bistro and enjoy its many benefits.
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A natural fertilizer
Coffee grounds are rich in potassium, magnesium, phosphorus and copper. It is therefore a very good complement to natural fertilizers such as nettle manure or crushed horn.
The latter being rich in nitrogen, when combined with coffee grounds, they provide your plants with everything they need to thrive. Spread it at the foot of plants or mix it with the earth.
A pest repellent
With its strong odor, it has the advantage of repelling certain pests such as slugs, aphids, ants, flies or nematodes. Do not hesitate to place it at the foot of your young seedlings so that they are no longer eaten by molluscs. Remember to repeat the operation regularly to preserve the effectiveness of the coffee, especially after it rains.
We love our cats dearly, who give it back to us with lots of purrs. However, it is impossible to make them understand that we should not nibble on the spathiphyllum or our brand new bed of perennials! To prevent your kitty from chewing on the leaves, apply coffee grounds. Place it at the base of the plant or spray the leaves with coffee. The smell will repel it, especially if you add your citrus peels.
Part of the compost
Like nettle manure, coffee grounds act as a compost activator. The biological activity it induces allows the elements to break down faster. Make sure, however, that there is no more coffee grounds than other organic waste. Present in too large a quantity, it inhibits the growth of plants.
Coffee grounds are a natural acidifier. If you are growing heather earth plants, don't hesitate to add some to your substrate. So, your hydrangeas will stay blue even in soil with neutral pH. In the case of an alkaline pH, it is better to grow them in pots.
An earthworm magnet
The coffee grounds attract earthworms which come to take them deeper underground. This improves the soil, especially since it serves as food for earthworms. The latter have an important role because their movements help to ventilate the earth. It is therefore organic waste to be favored in your vermicompost!
A seedling compost
Once dry, the coffee grounds are used as a substrate for your seedlings. Thanks to its nutrients and repellency, it is ideal for young shoots. However, consider mixing it with special seedling potting soil and sand so as not to inhibit the growth of seedlings and provide a draining substrate.
In the same way as salt, we use coffee grounds for avoid slipping on the aisles during frosty periods. More respectful of the environment, it has the same action as salt thanks to its acidity. This avoids increasing the rate of soil and water salinity, which alters ecosystems.
Mixed in equal parts with water and white vinegar, coffee grounds are an ecological cleaner. It preserves the color of the wood and fades small scratches.
A substrate for mushroom cultivation
Inexpensive, coffee grounds are an ideal substrate for growing your own mushrooms. You just need to fill a sachet with it, adding mycelium. After three weeks in a dark and warm place, all you have to do is take the sachet out to the light and water to maintain some humidity. About ten days later, you will see small mushrooms appear!