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PlantingCalc

Square Foot Garden Planner

Plan your square foot garden bed. Select up to 5 vegetables and see how many plants fit in each square using SFG spacing rules.

Data last updated: March 2026

feet

Standard SFG beds are 4 feet wide

feet

Common sizes: 4x4, 4x8, or 4x12

Square Foot Gardening Spacing Rules

Extra-Large: 1 per sq ft(Tomatoes, Squash, Eggplant)
Large: 1 per sq ft(Peppers, Broccoli, Cabbage)
Medium: 4 per sq ft(Lettuce, Spinach, Swiss Chard)
Small: 9 per sq ft(Carrots, Radishes, Onions)
Tiny: 16 per sq ft(Chives, Green Onions)

Garden Plan Results

๐Ÿ“Total Squares
16sq ft
๐ŸฅฌVegetables Selected
3types
๐ŸŒฑTotal Plants
31plants

Plant Breakdown

๐Ÿ…

Tomato

Extra-Large (1/sq ft) ยท 6 squares

Harvest: 60-85 days

6

plants

๐ŸŒถ๏ธ

Pepper

Large (1/sq ft) ยท 5 squares

Harvest: 60-90 days

5

plants

๐Ÿฅฌ

Lettuce

Medium (4/sq ft) ยท 5 squares

Harvest: 30-60 days

20

plants

Bed Layout (4ft x 4ft)

๐Ÿ…1x
๐Ÿ…1x
๐Ÿ…1x
๐Ÿ…1x
๐Ÿ…1x
๐Ÿ…1x
๐ŸŒถ๏ธ1x
๐ŸŒถ๏ธ1x
๐ŸŒถ๏ธ1x
๐ŸŒถ๏ธ1x
๐ŸŒถ๏ธ1x
๐Ÿฅฌ4x
๐Ÿฅฌ4x
๐Ÿฅฌ4x
๐Ÿฅฌ4x
๐Ÿฅฌ4x
๐Ÿ… Tomato (6 sq ft)
๐ŸŒถ๏ธ Pepper (5 sq ft)
๐Ÿฅฌ Lettuce (5 sq ft)

Each cell = 1 square foot. Number shows plants per square.

Frequently Asked Questions

Square foot gardening (SFG) is a planting method developed by Mel Bartholomew that divides a raised bed into a grid of 1-foot squares. Each square is planted with a specific number of plants based on their mature spacing needs. For example, you plant 1 tomato per square, 4 lettuce per square, or 16 radishes per square. It simplifies garden planning, eliminates wasted row space, and maximizes production in small areas.

How Square Foot Gardening Works

Square foot gardening (SFG) was popularized by Mel Bartholomew in 1981. The method divides raised beds into a grid of 1-foot squares. Each square is planted with a specific number of plants based on their mature size. This eliminates row spacing, reduces wasted space, and makes planning simple. A standard 4x4 bed gives you 16 squares to work with, and a 4x8 bed gives you 32 squares.

Tips for a Productive Square Foot Garden

  • Use a high-quality soil mix (Mel's Mix: equal parts compost, peat moss, and vermiculite) for best results in raised SFG beds.
  • Plant tall crops on the north side of the bed so they do not shade shorter vegetables.
  • Succession plant quick-harvesting squares (radishes, lettuce) to get multiple crops per season from the same square.
  • Add a trellis on the north end to grow vining crops like cucumbers, peas, and pole beans vertically without shading neighbors.
  • Use the companion planting checker to make sure your selected vegetables grow well together.

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