How Far Apart to Plant Tomatoes
Set your conditions — the recommendation updates instantly.
GardenSays
Your 8×4 ft raised bed fits 8 tomatoes at 21-inch spacing.
- Between plants
- 21 in
- Grid
- 4 × 2
- Total plants
- 8
Tomatoes grown staked need 18-24 inches between plants, and in a raised bed you can use that same spacing in both directions — no walking rows needed. At the 21-inch midpoint, that's 4 along the bed and 2 across — 8 plants.
Calculated result · 1 verified source · Checked 2026-07-15 · How we decide
Why
Crowding is the most common spacing mistake: closer planting doesn't add yield, it adds shade, disease pressure, and small fruit. When in doubt, use the wider end of the range.
- Air circulation between mature plants is the cheapest disease prevention there is.
- Roots spread wider than the plant looks in June — spacing is set for August size.
When this doesn't apply
- Determinate (bush) varieties stay smaller — the tight end of the range is fine; indeterminate vines want the wide end.
- Square-foot gardening compresses further than these numbers — it trades yield per plant for yield per bed and needs diligent feeding.
How this was calculated
- 1. In-row spacing21 in
Tomato (staked): 18-24 inches between plants (extension guidance); midpoint used
- 2. Intensive grid4 × 2 plants
Raised beds skip walking paths: plants sit on a 21×21 inch grid. 96÷21 along, 48÷21 across (edge margins included in the division)
- 3. Total8 plants
4 × 2
Data sources
- University of Minnesota Extension — Growing tomatoes in home gardens — Space staked plants 18-24 inches apart, caged plants 24-36 inches, with rows 3-4 feet apart. (checked 2026-07-15)
What changes this answer
Support style
Layout
Bed length (ft)
Set the value in the calculator above.
Bed width (ft)
Set the value in the calculator above.
Every change updates the answer, the math, the weekly steps and the share link instantly.
People also ask
How far apart should tomatoes be in a raised bed?
Your 8×4 ft raised bed fits 8 tomatoes at 21-inch spacing. Calculate yours →
What happens if tomatoes are planted too close?
When should I plant my tomatoes?
Start tomato seeds indoors Mar 22 – Apr 5; transplant once frost danger is past and soil has warmed to ~60°F — typically May 17 – May 24 here. Calculate yours →
Your next decisions
More plant spacing tools: see all →