A vegetable garden planner helps you maximize the productivity of your garden beds by calculating the exact number of plants that fit, based on each vegetable's spacing requirements and your preferred planting method. Whether you use traditional row planting or high-density square foot gardening, knowing your plant counts before you buy seeds saves money and prevents overcrowding.
Garden Bed Setup
How to Use the Vegetable Garden Planner
Whether you have a small 4x4 foot raised bed or a large in-ground garden, knowing exactly how many plants fit — and how to arrange them — is the first step to a productive harvest. Our free vegetable garden planner calculates plant counts, generates a visual spacing grid, estimates yield, and suggests companion plants for your chosen vegetable.
Step 1: Enter Your Bed Dimensions
Enter the length and width of your garden bed. Use the unit toggle to switch between feet and meters. The most common raised bed size is 4 feet wide by 8 feet long, which allows easy reach from both sides. Beds wider than 4 feet (1.2 m) become difficult to tend without stepping inside.
Step 2: Choose Your Vegetable
Select from 25 common vegetables and herbs. Each vegetable has preset spacing requirements based on its mature size. Compact vegetables like lettuce, carrots, and radishes fit many plants per square foot. Large sprawling plants like squash and zucchini may only fit 1-2 per bed.
Step 3: Select Row Planting or Square Foot Gardening
Row planting arranges plants in straight lines with paths between rows — traditional in large gardens but less efficient in small beds. Square foot gardening (SFG) uses a dense grid that maximizes every square foot. SFG typically fits 2-4x more plants in the same space. For raised beds under 100 sq ft, SFG is usually the better choice.
Step 4: Review the Spacing Grid
The visual grid shows exactly where each plant goes in your bed. Each circle represents one plant. This is especially helpful for beginners who want to see what a fully planted bed looks like before they start digging. The grid is capped at 20×20 for display purposes, but the plant count is accurate for any bed size.
Step 5: Use the Companion Planting Tips
Companion planting is the practice of growing beneficial plants near each other. Basil planted near tomatoes repels aphids and whiteflies. Beans fix atmospheric nitrogen, enriching soil for neighboring plants. Marigolds deter nematodes and attract beneficial insects. Use these tips to plan inter-cropping and maximize your bed's overall health and productivity.
Reading the Yield Estimate
The yield range is based on typical production per plant under good growing conditions. For tomatoes, this is 10-15 lbs per plant; for lettuce, 0.5-1 lb per plant. Yields depend heavily on your climate, soil, watering consistency, and the specific variety you grow. Use the estimate as a planning guide, not a guarantee.
Frequently Asked Questions
Is this vegetable garden planner free?
Yes, the vegetable garden planner is completely free with no limits. Plan as many beds and vegetable combinations as you like. No signup or account required, and all calculations run locally in your browser.
Is my garden data private?
Absolutely. Every calculation runs locally in your browser using client-side JavaScript. No dimensions, plant selections, or personal information are ever sent to a server. Your data stays completely private on your device.
What is square foot gardening (SFG)?
Square foot gardening is a high-density planting method that divides a bed into 1-foot grid squares and assigns a specific plant count per square based on plant size. Developed by Mel Bartholomew, SFG typically produces 2-4x more food in the same space compared to traditional row gardening.
How many tomato plants fit in a 4x8 raised bed?
In a 4x8 foot raised bed, you can typically fit 4-6 tomato plants using traditional row spacing (24 inches apart). With square foot gardening, each tomato plant needs its own 2x2 foot section, so you get 4-8 plants depending on the variety. Indeterminate tomatoes need more space than determinate bush types.
What is the difference between row planting and square foot gardening?
Row planting arranges plants in straight lines with walking paths between rows, which is efficient for large gardens but wastes space in small beds. Square foot gardening (SFG) uses a dense grid layout with no wasted path space, making it ideal for raised beds. SFG typically fits 2-4x more plants in the same bed area.
How accurate is the yield estimate?
Yield estimates are averages based on typical garden production under good conditions — adequate water, sunlight, and fertile soil. Actual yields vary widely based on your climate, soil quality, pest pressure, variety choice, and growing skill. Treat the estimate as a realistic range for planning purposes, not a guarantee.
What are companion plants and why do they matter?
Companion plants are species that benefit each other when grown nearby. Benefits include pest deterrence (basil repels aphids from tomatoes), pollinator attraction, nitrogen fixation (beans enrich soil for other plants), and physical support. Planting companions together can improve yields and reduce the need for pesticides.
Can I plan a metric garden bed?
Yes. Use the unit toggle to switch between feet/pounds and meters/kilograms. The planner accepts bed dimensions in meters and displays plant counts, spacing grids, and yield estimates in metric units.