Tomato Spacing in a Raised Bed (Plant Count + Yield Range)
Recommended tomato spacing, how many plants fit in common beds, and a planning yield range per bed.
Worked example (4×8 ft)
Bed: 8×4 ft, 12" depth. Soil = 8×4×(12/12) = 32 ft³ (≈ 1.185 yd³). With 18" spacing: plants = floor(96/18)×floor(48/18) = 10. Bags (2 cu ft): ceil(32/2) = 16. Yield range: 10 × (6–15) × 1.00 = 60–150 lb (typical ≈ 100 lb).
Why the numbers vary
Spacing changes airflow and root room; yields depend on variety, sunlight, soil, watering, pests, and season length. PlantYields shows ranges to avoid false precision.
FAQ
What spacing should I use for tomato in a raised bed?
A solid starting point is 18 inches (center-to-center). Adjust for your variety, trellising, and how much airflow you want.
How many tomato plants fit in a 4×4 bed?
Plant count = floor(48/18) × floor(48/18). Use the calculator to avoid manual math.
How many tomato plants fit in a 4×8 bed?
Plant count = floor(96/18) × floor(48/18). This grid model is conservative (no overcrowding).
How much can one tomato plant yield?
Our dataset uses a planning range of 6–15 lb per plant (typical 10 lb). Real yields vary with variety, weather, and harvest method.
Why is my yield range so wide?
Yield depends on cultivar, sunlight, soil fertility, spacing, watering consistency, pests, and the length of your growing season. Planning ranges prevent false precision.
Does a greenhouse change the estimate?
Yes. Greenhouse or protected conditions can increase yield potential. PlantYields applies a small multiplier to reflect this (still an estimate).
Sources
- PlantYields dataset (spacing + yield ranges): /data/crops.json
- USDA and University Extension growing guides (verify locally): PLACEHOLDER references listed in the dataset.
Related pages
- How much soil for a 4×8 raised bed?
- How many bags of soil for a raised bed?
- Inches to feet conversion
Related crops
Estimate only. Validate spacing with seed packets and local recommendations.