How far apart to plant corn

Space corn seeds 7-9 inches apart in the row with 24-30 inches between rows, and plant in blocks of at least three to four short rows rather than one or two long rows to ensure good pollination.

The spacing: Seeds should be spaced 7-9 inches apart in the row with 24-30 inches between rows; for high-density corn, plant in 15 by 15 inch squares.

Plant in blocks of at least three to four short rows rather than one or two long rows to ensure good pollination and full kernel development.
Planting in blocks of three or more rows rather than in a single long row improves pollination and ear production.
For high-density corn, plant in 15 by 15 inch squares.

The mistake to avoid: Avoid planting corn in a single long row, since blocks of three or more rows improve pollination and ear production.

Spacing varies by variety and layout; your local extension office is the closest authority.

How close can you plant corn together?

“Spacing: 9"- 12" in-rows x 24"- 36" between rows; minimum of three rows side by side (preferably four rows) to ensure good pollination.” — extension.umd.edu

In practice, this means you can set corn seeds as close as 9 inches apart within a row, with rows 24 to 36 inches apart. To get good pollination, plant at least three rows side by side, and preferably four.

Grounded in: extension.umd.edu, extension.usu.edu. Every window and number follows sentences verified verbatim on those pages.

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