Get what everyone wants from their tomato plants healthy vigorous growth and an abundant crop - with Jobes Fertilizer Spikes for Tomatoes. Convenient and easy to use, Jobes fertilizer spikes provide nutrition underground where plant roots can use it. Just insert spikes around plants and the slow-release formula feeds plants for up to 8 weeks. Plus, spikes ensure that nutrients arent washed away like surface applied fertilizers. The specially formulated, premeasured spikes make for a fast, easy and mess-free fertilizing experience.