Amazon.com offers the Miracle-Gro Indoor Plant Food, 48-Spikes for $1.97.
Free shipping on orders over $25.
Feed all flowering and foliage houseplants with Miracle-Gro Indoor Plant Food Spikes. Safe for all houseplants when used as directed, the spikes feed plants for up to 2 months. They also contain micronutrients that are especially beneficial to houseplants.