Coffee gives you a pick-me-up, but will it do the same for your plants? It might, if the plants you water grow in acidic soil. Different plants grow better in different types of soil, and sometimes it’s tough to keep one area of your garden more acidic than others. Traditional ways to make soil more acidic range from applying chemical fertilizers to adding sulfur to simply allowing leaves to remain on the soil and decompose. Coffee has long been used as an organic fertilizer and is useful for adding acid to earth. The next time you have leftover coffee, consider giving your garden a drink.
Things You'll Need
- Cool coffee
- Watering can or coffee carafe
Select acidic soil-loving plants like African violets, azaleas, amaryllis, cyclamen, hydrangea, bromeliad, gardenia, hyacinth, impatiens, aloe, gladiolus, phalaenopsis orchid or begonia. Do not water plants with coffee that don’t love acidic soil or they may die.
Allow your coffee carafe or pot–as well as your leftover unflavored coffee–to completely cool.
Dilute the coffee with cool tap water, adding at least as much water as there is coffee.
Water acid-loving plants in your garden and those inside with the watered-down coffee, using a watering can or a coffee carafe.