How Deep to Plant Onion Bulbs in Florida Soil

Dry onion bulbs are planted 1 inch deep.

Properly planted onions grow successfully in Florida soil. Onion sets, which are clusters of onion bulbs, contain large and small bulbs. These bulbs produce dry onions or green onions, according to their size and spacing.

Planting Dry Onions

Dry onions grow from onion sets that are smaller than the diameter of a dime. These bulbs should be planted at a depth of 1 inch and spaced at least 6 inches apart, according to the University of Florida Extension.

Planting Green Onions

Green onions are generally grown from large onion sets that are wider than the diameter of a dime. These onion bulbs are planted 2 to 3 inches deep and spaced 1 inch apart.

Raised Beds

Onion roots may be exposed to standing water in areas of Florida that are near sea level or have soil with poor drainage. Raised beds provide a solution for growing onions and other vegetables in these soils. Dry onions and green onions are planted at the same soil depth in raised beds as they are in ground-level gardens.

References

• University of Florida IFAS Extension: Florida Vegetable Gardening Guide
• University of Illinois Extension: Onion
• Texas A&M University: Onion Planting