This item is sold by cases of: [6] items.Liquafeed Refill 16Oz 4Pk - LiquaFeed All Purpose Plant Food Refills 12-4-8 provide spectacular results from the easiest feeding system available. Feeds plants through leaves and roots. Safe to use with all flowers, vegetables, trees and shrubs throughout the growing season. Each bottle feeds up to 400 sq. ft. in 15 minutes. Ready-to-use 4-pack of 16 oz. refill bottles.