Miracle-Gro makes growing beautiful, vibrant houseplants easy with their Indoor Plant Food Spikes. Using the Miracle-Aerator spike, simply make a small hole in moist soil and insert the plant food spike. Then sit back, relax, and enjoy your happy houseplants. Miracle-Gro Indoor Plant Food Spikes are ideal for feeding all indoor plants, including ficus, snake plant, croton, spider plants, and pothos. Feed and grow stronger houseplants with Miracle-Gro.