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Select your crop, enter your bed size — get exact row spacing, plant count, seeds to buy, and a visual layout grid
Getting row spacing right is one of the most overlooked factors in vegetable garden productivity. Too close and plants compete for light, water, and nutrients — causing disease pressure and reduced yields. Too far and you waste precious growing space to weeds. Our free row spacing calculator uses crop-specific data to give you the exact in-row and between-row spacing for every vegetable you grow.
In-row spacing is the distance between individual plants within a single row. Between-row spacing is the distance between parallel rows. These two numbers are often different: carrots may be spaced 3 inches apart within a row but require 12–18 inches between rows for working room. Both numbers together define your planting density and total plant count per bed.
Plants spaced correctly reach their full yield potential because each one gets equal access to sunlight, moisture, and soil nutrients. Crowded plants produce fewer fruits, develop more disease from poor airflow, and are harder to maintain and harvest. Properly spaced plants in a well-planned row garden outperform densely packed beds for most large fruiting crops.
Row gardening uses long parallel rows with walking paths between them. It suits large gardens, vining crops, and mechanical cultivation. Square foot or block gardening spaces plants equidistantly in all directions with no walking paths — it produces more per square foot but requires reaching in from the edges. Our calculator handles both: set path width to 0 for block-style beds.
Seed packets often list two spacing numbers: in-row spacing and row spacing. Our crop database uses these figures as defaults, but you can always override both fields with your packet’s specific numbers. Spacing can vary by variety — a dwarf bush bean may tolerate 4 inches in-row, while a standard variety needs 6 inches. Always confirm with your packet for best results.
Use this table as a spacing reference when your seed packet is unavailable. Enter your bed dimensions above for exact plant counts and a visual layout.
| Vegetable | Category | In-Row (inches) | Between Rows (inches) | Planting Depth | Spacing Notes |
|---|---|---|---|---|---|
| Tomatoes | Fruiting | 24–36″ | 36–48″ | Deep (buried to first leaves) | Indeterminate need most space; determinate can go 24″ |
| Peppers | Fruiting | 18–24″ | 24–36″ | Same depth as transplant | Compact plants; tighter rows workable in fertile soil |
| Cucumbers | Fruiting | 12–24″ | 36–60″ | 1″ deep | Trellised plants can go 12″; bush types need 24″ |
| Zucchini | Fruiting | 24–36″ | 36–48″ | 1″ deep | Large sprawling plants need generous spacing |
| Green Beans (Bush) | Fruiting | 4–6″ | 18–24″ | 1–1.5″ deep | Plant in wide rows 3–4 plants across for efficiency |
| Peas | Fruiting | 2–4″ | 18–30″ | 1–1.5″ deep | Sow in double rows 6″ apart on either side of trellis |
| Sweet Corn | Fruiting | 9–12″ | 30–36″ | 1–1.5″ deep | Plant in blocks of at least 4 rows for pollination |
| Lettuce (Head) | Leaf | 12–14″ | 12–18″ | Surface (needs light) | Thin to final spacing after germination |
| Lettuce (Leaf) | Leaf | 6–8″ | 12–18″ | Surface (needs light) | Cut-and-come-again; can grow 4 per sq ft |
| Spinach | Leaf | 3–6″ | 12–14″ | ½” deep | Sow densely, thin to 3–4″ for baby leaf harvest |
| Kale | Leaf | 18–24″ | 18–24″ | ¼–½” deep | Large mature plants; give full spacing for best yield |
| Arugula | Leaf | 4–6″ | 10–12″ | Surface broadcast | Often broadcast sown and thinned; bolts fast in heat |
| Carrots | Root | 2–3″ | 12–18″ | ¼–½” deep | Sow thickly (1″ apart), thin to 2–3″ after emergence |
| Radishes | Root | 2″ | 12″ | ½” deep | Fastest vegetable — use as row markers with slow germinators |
| Beets | Root | 3–4″ | 12–18″ | ½” deep | Each “seed” is a cluster — thin after emergence |
| Potatoes | Root | 10–14″ | 30–36″ | 3–4″ deep | Wide row spacing needed for hilling — do not crowd |
| Onions | Root | 4–6″ | 12–18″ | 1″ deep (sets) | Grow in wide rows 3–4 plants across for efficiency |
| Broccoli | Brassica | 18–24″ | 24–36″ | ¼–½” direct or transplant depth | Give full spacing — crowded brassicas yield small heads |
| Cabbage | Brassica | 18–24″ | 24–36″ | Transplant depth | Larger heads need 24″ spacing; salad types can go 12″ |
In a small garden, minimize wide-row spacing. Use trellises for cucumbers, beans, and peas to grow vertically instead of sprawling horizontally. Prioritize compact varieties. Focus on high-value crops that are expensive at the market: tomatoes, peppers, lettuce, and herbs.
A 4-foot-wide raised bed works well with 2–3 rows of most crops. Keep beds no wider than 4 feet so you can reach the center from both sides without stepping in. Use our calculator to maximize the number of rows that fit given the crop’s between-row spacing requirements.
In larger in-ground gardens, row spacing should account for the equipment or tools you use between rows. A standard garden tiller needs 18–24 inches. If weeding by hand with a hoe, 12–15 inches between rows is manageable. Add path space between bed blocks every 4–6 rows for access.
In-row spacing is the distance between individual plants within a single row — measured from the center of one plant to the center of the next along the row. Between-row spacing is the distance between parallel rows, measured from the center of one row to the center of the next. In-row spacing is determined by the plant’s mature canopy size, while between-row spacing typically adds working space for cultivation, watering, and harvest access.
It depends entirely on the in-row spacing for your crop. A 10-foot (120-inch) row fits 40 radish plants at 3-inch spacing, 20 spinach plants at 6 inches, 10 lettuce heads at 12 inches, 6 pepper plants at 18–20 inches, or just 4–5 tomato plants at 24–30 inches. Use our calculator above for exact counts with your specific crop and spacing.
You can reduce spacing by 10–15% in fertile, deeply amended raised bed soil where plants have access to consistent moisture and nutrition. This works best for leafy greens harvested young (baby spinach, arugula, cut lettuce) and small root crops. Fruiting plants like tomatoes, peppers, cucumbers, and squash should not be crowded — doing so reduces airflow, increases fungal disease, and limits fruit production.
The ideal vegetable bed width is 3–4 feet. This allows you to reach the center of the bed from both sides without stepping on the soil, which prevents compaction. Beds wider than 4 feet require stepping in to tend interior plants, which compacts the growing area over time. For single-sided access (beds against a wall or fence), limit width to 2–2.5 feet.
Indeterminate tomato plants can grow 4–6 feet tall and spread 2–3 feet in diameter at maturity. Wide between-row spacing (36–48 inches) ensures adequate sunlight reaches lower leaves and fruit clusters, allows air to circulate to reduce fungal disease, and provides working room for pruning, staking, and harvesting. Crowded tomatoes develop more late blight and produce smaller fruit than properly spaced plants.
This free tool is built for home vegetable gardeners planning in-ground rows, raised beds, and market garden plots. Spacing data is based on published USDA extension service guidelines and university horticultural research for each crop. The calculator returns in-row and between-row spacing, total plant count, seeds to sow (with germination buffer), a row-by-row breakdown, and a visual grid preview to help you lay out your garden before planting day. All figures carry a natural variance of ±10–15% based on variety, soil fertility, and growing conditions.
For calculating exactly how many seeds to buy for your family size, use our Vegetable Seed Calculator. For exact harvest dates based on your planting date, try our Harvest Date Calculator. Find your last frost date and growing season length with our Frost Date Calculator.
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