Seed packets often list a single spacing. Real spacing depends on whether the plant stops at a bushy height (determinate / “patio” / many sauce types) or keeps growing all season (indeterminate).
Spacing ranges that actually get used
| Type | Spacing in a 4-ft-wide bed | Support |
|---|---|---|
| Determinate / bush | 18–24 in | Cage or short stake |
| Indeterminate, caged, little pruning | 30–36 in | Tall cage; do not pinch into a single stem unless you know the system |
| Indeterminate, pruned to 1–2 stems on twine or a stake | 18–24 in | Requires weekly sucker removal |
| Cherry, vigorous indeterminate | 24–36 in | They outgrow tight spacing by July |
In a 4×8 bed, 18-inch grid spacing can theoretically fit 10 plants. That is a lot of tomatoes in 32 square feet. It only works if you trellis, prune, and water evenly. Two to six well-grown plants often feed a household with less blight pressure. Check the count with the plant spacing calculator.
Square-foot gardening
The common square-foot rule is one tomato per square. For indeterminate varieties, one plant per two squares (about 18×24 inches or more) is less of a jungle. Determinate plants fit the 1-per-square pattern more honestly.
Why gardeners plant too close
Seedlings look tiny in May. By August, poorly spaced indeterminates shade their own lower leaves, stay wet after rain, and make harvest a wrestling match. If you only have one 4×8 bed, plant fewer tomatoes and interplant basil or lettuce at the edges early in the season.
For soil and feeding that match close planting, see how to fertilize a raised bed and the full tomato growing page.
Frequently asked questions
Can I plant tomatoes 12 inches apart?
Only in a managed single-stem system, and even then disease pressure can be high. It is not a beginner spacing.
How far from peppers?
Keep tomatoes from heavily shading peppers. A foot or more between canopies is more important than a magic number. See [pepper spacing](/guides/how-far-apart-to-plant-peppers).