With stock and price varying by ZIP code, Lowe's offers the Sta-Green 40-Count Boost Pac Flower and Vegetable Food Water-Soluble Granules, model no. 51-611741, for $0.97. Choose in-store pickup to dodge the $79 delivery fee. That's $8 under the lowest total price we could find for a similar item elsewhere. It's designed for all outdoor and indoor plants.