Garden PlannerEvidence-aware. Garden with confidence.

Build a Garden That Fits

Plan smarter beds and grow with confidence.

LocationPortland, OregonBed size12 ft × 4 ftWhat are you growing?Tomatoes, basil, carrots, beans, lettuce…Update planClear
Elevated view of a timber raised bed planted with tomatoes, basil, lettuce, carrots, onions, marigolds, beans and cucumber12 ft4 ft
SpringSummerFallWinter
Best balanceMaximize yield and diversity
Simplest careFewer irrigation groups
Pollinator supportAdd flowers and habitat
Compare plans

What it considers

  • Bed or container dimensions, north direction, paths and fixed objects
  • Your frost dates and each crop's windows, so plants overlap in time only when they really would
  • Real spacing and footprints (63 catalog plants)
  • Sun, canopy shade, roots, water, soil pH, fertility and harvest access
  • Bed history and family rotation, as a separate layer
  • 119 reviewed companion records, applied only in matching context
  • Your priorities: yield, ease, diversity, pollinators, pest support, succession or experimentation

What it cannot know

  • Your actual frost this year, your microclimate, your soil's history before you
  • Whether the beneficial insects a record relies on live near you
  • Cultivar differences beyond what the catalog records
  • Anything about plants outside the catalog

Every result says what was applied, what could not be applied and why, and what is unknown. The companion score never overrides spacing, season, light, water or rotation.

Privacy and storage

Plans are saved in your browser (IndexedDB) and never sent to a server. Export to JSON to back up or move between devices; print a plan and task list. Supported calendar regions: Portland, Oregon; Minneapolis–St. Paul, Minnesota; Atlanta, Georgia; London and South-East England; Zagreb and continental Croatia; Melbourne, Victoria. Elsewhere, enter your own frost dates. Setup takes about five minutes.

No account, no tracking, works offline after the first visit.

Sample result

Pole beansLettuceLettuce mixBasilCarrotTomatoTomatoMarigoldMarigoldBasilOnionCucumber12 ft (3.6 m)4 ftN
Physical fitAll selected plants fit within the bed with a 30 cm path reach from one side.
Season overlapContinuous harvest potential from June through October in the sample region.
Rotation noteTomatoes in this bed mean no nightshades here again until the third following spring.
Conditional companion benefitBasil beside tomatoes: efficient use of space (Tier B); no pest or flavour effect claimed.
No verified relationshipLettuce beside tomato: no evidence either way; placed on the shaded side for summer heat (conditional, Tier C).
Fit warningCucumber vines would cover the onions; trained up the end trellis instead.
Open this sample in the planner

How a plan is made

  1. Location and season. Region preset or your own frost dates; no device location required.
  2. Garden type. In-ground, raised bed, container, greenhouse or mixed.
  3. Beds. Dimensions, north direction, paths, trellis and no-plant zones.
  4. Sun, soil and water. Simple categories per bed.
  5. Crops and quantities. Search, pick, fix positions if you want.
  6. Bed history. What grew there before, for rotation.
  7. Priorities. What matters most to you.
  8. Generate. Three alternatives, each with a reason ledger; compare, regenerate, override with a recorded reason, save, print, export.

Every step can be skipped with "unknown"; the result says what that cost. Back navigation keeps your entries; save-and-exit resumes later.

Top-down bed plan with measured grid, plant footprints, north direction, trellis, paths and one accessible route.
The same bed planted, photographed from the same angle as the plan, with the planner result inset.
Three alternative layouts for the same crop list (best balance, simplest care, pollinator support) with visible trade-offs.

Our Methodology & Sources

We synthesize peer-reviewed research, university extension publications, and trusted horticulture resources. Our evidence levels help you understand how strong the science is behind the guidance.

Evidence tiers

Supported evidenceConsistent results from multiple robust studies
Traditional claimHistorical use reported, limited scientific support
Context dependentMixed or variable results across conditions
No verified relationshipNo reliable evidence identified

Primary source types

  • Peer-reviewed journal articles
  • University extension publications
  • Government & research institute reports
  • Systematic reviews & meta-analyses

Last updated

August 24, 2026

Learn more about our approach