Companion Planting Calculator

Mixed Crop Compatibility & Planting Strategy Calculator

The Companion Planting Calculator helps growers identify crop combinations that are often considered compatible within the same bed, spiral, market garden block, or small-footprint food system.

Use this calculator to select a main crop, add a secondary crop, and explore how the combination may perform in terms of compatibility, space use, pollinator support, and general planting practicality.

This is a planning tool for gardeners, market growers, schools, nonprofits, rooftop growers, and food-security projects looking for better ways to combine crops within the same growing system.

Companion planting works best when combined with good spacing, irrigation, soil health, and timing. Even strong companion pairings still depend on climate, season length, crop vigor, and how intensively the growing space is managed.

How Companion Planting Works

Companion planting is the practice of combining crops that may help each other perform better or simply coexist more efficiently. Some pairings are popular because they make better use of vertical and horizontal space. Others are used to improve habitat for beneficial insects, reduce exposed soil, or simplify mixed harvest patterns.

A companion planting tool is not a guarantee of yield improvement. Instead, it helps growers avoid obviously poor combinations and focus on pairings that are more practical in a shared growing system.

In general, good mixed-crop combinations often share one or more of these traits:

• Different growth habits: upright, trailing, low, or vertical crops can share space more efficiently.
• Different rooting patterns: crops may draw resources from different zones.
• Different harvest timing: one crop may finish before the other fully expands.
• Pollinator or insect support: herbs and flowers can sometimes improve system diversity.
• Reduced direct competition: some combinations are simply easier to manage than others.

PLANNING • MIXED CROPS • SYSTEM DESIGN

Find Compatible Crop Combinations

Select a main crop, choose a companion crop, and compare how the pairing fits your system, planting goal, and overall management practicality.

Pairing inputs

Build a mixed planting around your main crop, then see whether the second crop is a strong fit, a workable fit, or one to approach with caution.

Crop pairing

Main crop Tomato Pepper Cucumber Squash Bean Lettuce Carrot Basil Onion Marigold Choose the crop you want to build the planting around.

Companion crop Basil Marigold Lettuce Carrot Onion Bean Pepper Tomato Cucumber Squash Choose the crop you are considering growing beside or within the same system.

System strategy

Growing system Raised bed Spiral / circular bed Market garden block Container system Rooftop system Some combinations are easier in larger beds than in tighter container systems.

Main planting goal Maximize production Support pollinators Use space efficiently Increase crop diversity Keep management simple The recommendation shifts slightly based on what you value most.

Check Pairing Reset Results also update as you change selections.

Compatibility summary

Quick planning view for the pairing score, system fit, competition risk, and overall recommendation.

Pairing score —

Compatibility —

System fit —

Goal alignment —

Pairing guidance

Compatibility rating—

System fit—

Goal alignment—

Space-sharing potential—

Management view

Competition risk—

Pollinator support—

Management difficulty—

Planting outlook—

Recommendation summary

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Notes: Companion planting guidance is directional, not absolute. Final results depend on spacing, irrigation, fertility, season timing, climate, and crop management.

Uses space more efficiently Mixed crops can sometimes fill vertical and horizontal gaps better than a single crop alone.

Improves diversity Varied plantings may support a more balanced and resilient growing environment.

Supports beneficial insects Herbs and flowers can add habitat and pollinator appeal inside the same system.

Creates flexible harvest patterns Growers can combine quick crops with longer-season crops in one planting plan.

See it in practice

Mixed planting strategies, water-smart systems, and space-efficient food production.

See it in practice

Urban Agriculture

Use companion crops and tight layouts in smaller production spaces.

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See it in practice

Rooftop Agriculture

Plan mixed plantings where space, weight, and irrigation efficiency matter.

Open guide →

Related tool

Irrigation Runtime Calculator

Convert crop water needs into practical runtime numbers for a shared planting system.

Open calculator →

Why Mixed Planting Matters in Small-Space Agriculture

In smaller growing systems, every square foot matters. Companion planting is often less about folklore and more about practical design: which crops can share the same growing zone without creating too much competition or management complexity.

A good combination might let you stack a taller crop with a lower crop, add a pollinator-supporting herb or flower, or bring a short-duration crop into the open space around a longer-season planting.

The Companion Planting Calculator is designed to help growers think through those combinations more quickly. It is a planning shortcut, not a replacement for observation, but it can help guide layout choices before planting begins.

What Makes a Good Companion Pairing?

Strong companion combinations usually share a few advantages:

• Different canopy habits: one crop grows tall while the other stays lower or tighter.
• Different growth timing: one crop establishes or finishes before the other becomes dominant.
• Different management roles: one crop supports pollinators, edges, or soil cover while the main crop drives yield.
• Reasonable resource demand: the crops do not overwhelm the same space at the same time.

Companion Planting in Crop Circle Systems

Companion planting can be especially useful in spiral, circular, and small-footprint systems because those layouts often rely on efficient use of space. Compact herbs, flowers, roots, and quick crops can sometimes be integrated around larger focal crops to create more layered and flexible planting patterns.

This kind of planning works best when paired with accurate spacing, targeted irrigation, and nutrient management. Mixed cropping is most successful when the system is designed for it from the beginning.

Build Smarter Mixed Planting Systems

The Companion Planting Calculator gives growers a quick way to test crop combinations before planting. This can improve layout planning, reduce obvious pairing mistakes, and create more intentional mixed planting strategies.

Once you know which crops are more compatible, you can make better decisions about:

• Bed layout and crop grouping
• Spacing and succession planning
• Irrigation and fertilizer strategy
• Pollinator support and system diversity

Mixed cropping is not always the right choice, but when it is used carefully, it can become a practical part of a productive, resilient food-growing system.

Hire Us To Design a Productive Growing System

Want help designing a mixed planting system, spiral layout, or water-smart food garden? Crop Circle Farms can help evaluate crop combinations, growing patterns, irrigation strategy, and overall production planning. Contact Us to discuss your project.

Support Food-Smart Community Growing Projects

We are also interested in working with partners, schools, nonprofits, and sponsors who want to build resilient, efficient food systems in communities that benefit from better local production. Contact Growing To Give to support a food-security project.