Check feeding your houseplants off your to-do list for up to 2 months with Miracle-Gro Indoor Plant Food Spikes. These plant food spikes make regular feeding practically effortless. Simply make a hole in moist soil, place one plant food spike in each hole, and cover with soil. Voila! You’re done, but these plant spikes are just getting started. Pre-measured and ready-to-use, these spikes do the work for you. They slowly and continuously nourish all types of houseplants so they get the essential micronutrients they need to grow lush and lovely.