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Planting Depth Guide for Bulbs and Tubers

How Deep to Plant?

Use this quick reference chart for planting depths, mature heights, and spacing of popular bulbs and tubers.

PlantDepthAverage HeightSpacing
Acidanthera3 inches3 feet3–6 inches apart
Calla (hybrids)2 inches1½ feet8–12 inches apart
Crocosmia3 inches3 feet3 inches apart
Dahlia (small)4 inches2 feet1–2 feet apart
Dahlia (large)6 inches5 feet3–5 feet apart
Gladiolus (small)3 inches2½ feet4 inches apart
Gladiolus (med. to large)4 inches4–5 feet4–6 inches apart
Liatris2 inches3 feet6 inches apart
Lily (small)3 inches3 feet6 inches apart
Lily (med. to large)6 inches5 feet1 foot apart
Tuberose2 inches3 feet4–6 inches apart

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