How deep to plant corn

Plant corn seeds about 2 inches deep, going deeper to 2.5 inches if the soil is dry at planting.

The depth: Target 2 inches deep under normal conditions; if the soil is really dry, target 2.5 inches. Most common recommended depths range between 1.5 and 2 inches, and with adequate soil moisture it is likely ideal to not go much deeper than 2 to 2.25 inches.

If soil conditions are dry at planting, 2 inches may be too shallow to reach adequate and uniform soil moisture.
If soil moisture is adequate, it is likely ideal to not go much deeper than 2 to 2.25 inches.
Err on the side of too deep rather than too shallow.

The mistake to avoid: Planting too shallow, under 1.5 inches, risks poor root development, stand establishment, and lodging.

Planting depth varies with soil type and variety; your local extension office is the closest authority.

Grounded in: crops.extension.iastate.edu, extension.entm.purdue.edu. Every window and number follows sentences verified verbatim on those pages.

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