Garden Spacing & Plant Count Calculator

Rows vs intensive spacing

The grid method divides bed area by the rectangle each plant needs: in-row spacing times between-row spacing. Tomatoes at 24×36 inches need 6 sq ft each, so a 4×8 bed (32 sq ft) fits floor(32/6) = 5 plants (exact 5.33). Expected yield at 10 lb/plant is about 50 lb. The intensive estimate squares the in-row spacing (2×2 ft = 4 sq ft) for a square-foot style ceiling — 8 tomato plants in that bed — labeled separately because crowding raises disease risk.

Why labeled spacing exists

Seed packets and extension guides build in airflow, root room, and harvest access. Packing peppers shoulder-to-shoulder looks productive in May and fungal in August. Trellised cucumbers and pole beans can use the tighter in-row numbers when vines go up; sprawling squash still wants the wide between-row figures in the table. If your bed is narrow, run rows the long way so between-row spacing fits.

Yield planning for a household

Yields here are home-garden midpoints from the crop data file — weather and soil move them ±30% easily. A family that eats a lot of sauce may want more than five tomato plants even if the bed “fits” five on paper; succession sow lettuce instead of planting the whole bed once. Pair this tool with the seed starting calculator so transplant dates match the count you just chose.

Succession and maturity

Days to maturity on the results panel is a catalog midpoint, not a promise. Cool springs stretch it; heat waves stall fruit set. For crops that bolt, plant smaller successive blocks every two weeks rather than one giant planting that goes bitter together. Use intensive counts only when you can water and harvest often enough to justify the density. Write the transplant date on a bed tag so you know when “90 days” started — memory is a poor calendar once July gets busy.

Reading the crop spacing table

Every crop in the dropdown pulls in-row inches, between-row inches, yield per plant, and maturity from the same data file that powers crop pages. No spacing numbers are hardcoded in this page. If a packet disagrees with our table, follow the packet for that cultivar — determinates and dwarfs often sit closer than indeterminate heirlooms. Print the results before you buy transplants so the nursery flat matches the bed, not the other way around.

Common mistakes: counting the intensive number while using cage tomatoes that want 24×36, planting the bed edge-to-edge with no path so you never harvest the middle, and estimating jars of sauce from ideal yields after a blight year. Leave a little edge for drip lines and your knees. When in doubt, plant the grid count and keep a spare transplant in a pot for gaps. Paths between beds are not wasted space — they are how you harvest without compacting root zones each week.

Frequently asked questions