What kind of fertilizer does the EarthBox need?
Each time you plant in the EarthBox, use two cups of a dry granular fertilizer or plant food for vegetables. The three numbers of the elements making up the fertilizer content should be in the range of 5 to 15; i.e., 12-8-10, 10-10-10. After you have applied the fertilizer stripe, no additional fertilizer will be needed.