Make sure your landscape is full of healthy plants with beautiful blooms with Jobes Fertilizer Spikes for Potted Plants & Hanging Baskets. Convenient and easy to use, Jobes fertilizer spikes provide nutrition underground at the roots - where plants can actually use it. Just insert spikes around your potted plants and the slow-release formula feeds them for up to 8 weeks. Plus, spikes ensure that nutrients aren't washed away like surface applied fertilizers. The specially formulated, premeasured spikes deliver fast, easy and mess-free fertilizer.