how deep does a planter need to be for vegetables
Large bulbs require a planting depth of 8 inches, which means the planter box should allow for the 6 inches needed at the bottom, as discussed earlier, making the depth at least 14 inches.Most smaller bulbs are planted at 3 to 4 inches deep, so they would do fine in planter box with an 8-inch depth.arge bulbs require a planting depth of 8 inches, which means the planter box should allow for the 6 inches needed at the bottom, as discussed earlier, making the depth at least 14 inches.