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Crop Rotation Calculator — Garden Bed Planner by Family

Build a crop rotation plan that prevents disease and builds soil health

Rotation Cycle

5 years

Beds

4

Families

4

N-Fixers

2

Rotation Cycle

5 years

4 beds \u00D7 5 families

Rotation Schedule

BedYr 1Yr 2Yr 3Yr 4Yr 5
#1LeguBrasNighCucuCove
#2BrasNighCucuCoveLegu
#3NighCucuCoveLeguBras
#4CucuCoveLeguBrasNigh

Family Guide

LegumesFixes nitrogen
Return: 2yr
BrassicasHeavy feeder
Return: 3yr
NightshadesDisease-prone
Return: 3yr
CucurbitsHeavy feeder
Return: 2yr

What You'll Need

Best Choice Cedar Raised Garden Bed 4x2ft

Best Choice Cedar Raised Garden Bed 4x2ft

$40-$554.5
View on Amazon
Espoma Organic Raised Bed Mix 1.5 Cu Ft

Espoma Organic Raised Bed Mix 1.5 Cu Ft

$15-$204.5
View on Amazon

2-in-1 Garden Kneeler and Seat Foldable 400lb

$42-$484.8
View on Amazon
GARDEN STAR 5 Cu Ft Poly Tray Wheelbarrow

GARDEN STAR 5 Cu Ft Poly Tray Wheelbarrow

$65-$904.4
View on Amazon
VIVOSUN 3-in-1 Soil pH/Moisture/Light Tester

VIVOSUN 3-in-1 Soil pH/Moisture/Light Tester

$10-$154.3
View on Amazon
CHRYZTAL Stainless Steel Garden Hand Tool Set 4pc

CHRYZTAL Stainless Steel Garden Hand Tool Set 4pc

$20-$304.5
View on Amazon
Best Choice Cedar Raised Garden Bed 4x2ft

Best Choice Cedar Raised Garden Bed 4x2ft

$40-$554.5
View on Amazon
Espoma Organic Raised Bed Mix 1.5 Cu Ft

Espoma Organic Raised Bed Mix 1.5 Cu Ft

$15-$204.5
View on Amazon

2-in-1 Garden Kneeler and Seat Foldable 400lb

$42-$484.8
View on Amazon
GARDEN STAR 5 Cu Ft Poly Tray Wheelbarrow

GARDEN STAR 5 Cu Ft Poly Tray Wheelbarrow

$65-$904.4
View on Amazon
VIVOSUN 3-in-1 Soil pH/Moisture/Light Tester

VIVOSUN 3-in-1 Soil pH/Moisture/Light Tester

$10-$154.3
View on Amazon
CHRYZTAL Stainless Steel Garden Hand Tool Set 4pc

CHRYZTAL Stainless Steel Garden Hand Tool Set 4pc

$20-$304.5
View on Amazon

As an Amazon Associate, we earn from qualifying purchases.

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Example Calculations

14 Beds, 4 Families + Cover Crops

Inputs

Beds4
FamiliesLegume, Brassica, Nightshade, Cucurbit
Cover CropsYes

Result

Rotation Cycle5 years
Families5
N-Fixers2

4 families + cover crops = 5 in rotation. Cycle = max(5, 4) = 5 years.

26 Beds, 6 Families

Inputs

Beds6
FamiliesLegume, Brassica, Nightshade, Cucurbit, Allium, Root
Cover CropsNo

Result

Rotation Cycle6 years
Families6
N-Fixers1

6 families, no cover crops. Cycle = max(6, 4) = 6 years.

Frequently Asked Questions

Q

Why is crop rotation important?

Crop rotation prevents soil-borne diseases, breaks pest cycles, and balances nutrient demands. Planting tomatoes in the same spot yearly builds up blight and nematodes. Rotating with legumes restores nitrogen. Most families need 3–4 years before returning to the same bed.

  • Prevents disease buildup (blight, clubroot, fusarium)
  • Breaks pest life cycles (root maggots, nematodes)
  • Balances nutrient demands (heavy vs light feeders)
  • Legumes fix nitrogen for following crops
  • Reduces need for fungicides and pesticides
Q

What are the main crop rotation families?

The key families for rotation are: Nightshades (tomato, pepper), Cucurbits (squash, cucumber), Brassicas (cabbage, broccoli), Legumes (beans, peas), Alliums (onion, garlic), and Root crops (carrot, beet).

  • Nightshades: tomato, pepper, eggplant, potato
  • Cucurbits: squash, cucumber, melon, pumpkin
  • Brassicas: cabbage, broccoli, kale, cauliflower
  • Legumes: beans, peas, lentils (nitrogen fixers)
  • Alliums: onion, garlic, leek, shallot
  • Root crops: carrot, beet, turnip, radish
FamilySoil EffectReturn YearsKey Crops
LegumesFixes nitrogen2 yearsBeans, Peas
BrassicasHeavy feeder3 yearsBroccoli, Kale
NightshadesDisease-prone3 yearsTomato, Pepper
CucurbitsHeavy feeder2 yearsSquash, Melon
Q

How many beds do I need for crop rotation?

A minimum of 4 beds allows basic rotation. Ideally, match bed count to the number of crop families you grow. More beds allow longer rest between rotations and room for cover crops.

  • Minimum 4 beds for basic rotation
  • 6–8 beds is optimal for diverse gardens
  • Match beds to number of crop families grown
  • Extra beds allow cover crop years
  • Small gardens: use containers to add rotation space
Q

Should I include cover crops in rotation?

Yes. Cover crops between rotations add organic matter, fix nitrogen (clover, vetch), suppress weeds (rye, buckwheat), and break up compaction (daikon radish). Even a short 6–8 week cover crop between seasons improves soil significantly.

  • Clover/vetch: fix 50–150 lbs nitrogen/acre
  • Winter rye: excellent weed suppression
  • Buckwheat: fast 6-week cover, attracts pollinators
  • Daikon radish: breaks up compacted soil layers
  • Cover crops add 1–3 tons of organic matter per acre

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Last Updated: Mar 20, 2026

This calculator is provided for informational and educational purposes only. Results are estimates and should not be considered professional financial, medical, legal, or other advice. Always consult a qualified professional before making important decisions. UseCalcPro is not responsible for any actions taken based on calculator results.

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