PlantingCalc

Seed Spacing & Yield Calculator

Select a vegetable and enter your bed dimensions to see how many plants fit, estimated yield, seed depth, and optimal spacing.

Data last updated: March 2026

Succession plant every 2 weeks

feet
feet

Spacing Results for 🥬 Lettuce

🌱Plants Per Bed
64plants
📏Plants Per Row
16plants
📐Number of Rows
4rows
🕳️Seed Depth
0.3inches
📅Days to Harvest
30–60days
🥗Estimated Yield
32lbs

Row Spacing Diagram

6"
Plant Spacing (in-row)
12"
Row Spacing
0.3"
Seed Depth
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Cross-section view · 4 rows across 4ft bed

Spacing Visualization (4ft x 8ft bed)

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64 plants total · 6" apart in rows · 12" between rows

Frequently Asked Questions

Proper spacing ensures each plant gets enough sunlight, water, nutrients, and air circulation. Overcrowding leads to competition for resources, increased disease pressure from poor airflow, and smaller yields. Under-spacing wastes valuable garden space. Following recommended spacing gives you the highest yield per square foot while keeping plants healthy.

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