Standard planting grids for a cutting garden are 6"x6", 9"x9", 12"x12" and 18"x18" on center. For example, zinnias and snapdragons can usually be planted on a 9"x9" grid; Queen Anne's lace, cosmos and amaranth will need 12"x12" spacing; dahlias and sunflowers need 18"x18". To make plant care (and picking) as easy .... ...