Introducing Organic Indoor Houseplant Capsules - these premium organic plant food capsules are designed to help take out the guesswork to feeding your indoor plants. Our organic capsules help apply the right amount of nutrients right at the roots to help your plants uptake the nutrients even faster. 12 Pack display of indoor houseplant organic capsules. 18 Organic fertilizer capsules in each carton. At Humane, we believe in using only the highest quality ingredients, which is why our plant food is made from premium organic materials. We understand the importance of providing your plants with the right nutrients.