Can I Water My Plants with Leftover Coffee?

As a coffee lover and a plant enthusiast, the idea of using leftover coffee as a fertilizer or a watering solution for my plants seemed fantastic to me. However, before pouring my morning leftover brew into my favorite houseplants' soil, I decided to do some research and figure out if coffee can indeed be a suitable option for watering plants.

The Benefits of Using Coffee as a Plant Fertilizer

First thing first, when coffee is served as a drink, it is often mixed with milk and sugar, making it unsuitable as a plant fertilizer. However, black coffee, which is without any added sugar or milk, contains multiple nutrients that can benefit the plants' growth. For example, coffee is naturally acidic, and many plants love acidic soil. Additionally, coffee contains nitrogen, phosphorus, and potassium, all of which are essential nutrients for a plant's growth.

Things to Consider Before Watering Your Plants with Leftover Coffee

Although coffee can indeed benefit plant growth, there are specific factors to consider before deciding to use coffee as a regular watering solution. Firstly, coffee can be acidic, so it should not be used for plants that are sensitive to acidity, such as ferns, palms, and spider plants. On the other hand, plants that thrive in acidic conditions, such as roses and tomatoes, can benefit from coffee. Secondly, coffee should only be used sparingly- it should not be the only liquid the plant receives. Lastly, coffee should only be used on plant soils that are adequately drained, as the liquid can damage roots and cause root rot.

How to Use Coffee as a Plant Fertilizer

If you decide to use coffee as a fertilizer for your plants, here's how you can do it properly. Firstly, brew a pot of black coffee and let it cool to room temperature. Then, mix one-part coffee with four parts of water to dilute the acidity. Next, pour the diluted coffee slowly into the soil around the base of the plants. Lastly, ensure that the soil is adequately drained, and no coffee is left sitting on top of the soil.

Conclusion

Using leftover coffee as a plant fertilizer can be an excellent way to provide your plants with all the essential nutrients they need to grow. However, it is crucial to consider the acidity, drainage, and the specific plants' needs before using coffee as a regular watering solution. If used properly, the results can be fantastic- healthier plants and a cleaner environment, all thanks to leftover coffee.