Jobe?s Fertilizer Spikes for Beautiful Houseplants 30ct x 2 packs Slow Release Plant Food. Keeping your houseplants healthy and fertilized is easier than ever with Jobe?s Houseplant Food Spikes. These spikes provide a continuous supply of important nutrients right at the roots, where plants need it most. Easy To Use, No Mixing or Measuring, Feeds For 2 months. Free Shipping. Shipping is only to the lower 48 states, USA. But? If you are outside the USA you may purchase if your country participates in's Global Shipping Program. Buy with confidence; we are Experienced sellers for over 20 years. Ships from Washington, DC. Preguntas? Adelante, Hablamos Español.