Pick GrowVeg
If catalog depth decides it. 400+ crops and 21,000+ varieties, two decades of refinement, research-backed companion data, and 440+ how-to videos — no younger planner, ours included, matches that library. Worth $35/yr if you'll use it.
Honest comparison
Siltwell vs. GrowVeg: an honest comparison
GrowVeg's Garden Planner has been refined since 2007 and also powers the Old Farmer's Almanac Garden Planner. It's the most complete paid planner on the web. Siltwell is younger, free at its core, and built around live weather. Here's the fair version of that matchup.
SiltwellGrowVeg
- Built forSiltwell · US home vegetable gardensGrowVeg · Vegetable-garden planning — the category's 20-year veteran
- Free tierSiltwell · The core planner is free, indefinitelyGrowVeg · 7-day free trial (no card), then subscription only
- Bed layout editorSiltwell · Free, with crop-rotation + companion warningsGrowVeg · Drag-and-drop with auto spacing; rows, containers, raised beds & SFG
- Plant catalogSiltwell · 150+ plants with spacing & rotation dataGrowVeg · 400+ crops, 21,000+ varieties — the biggest in the category
- Planting calendarSiltwell · From your own frost dates, microclimate-calibrated on Pro (US coverage)GrowVeg · From climate data of 5,000+ weather stations, with email reminders
- Crop rotationSiltwell · Warnings in the layoutGrowVeg · Year-over-year rotation notifications
- Companion plantingSiltwell · Warnings in the layoutGrowVeg · Research-backed companion system
- Succession plantingSiltwell · FreeGrowVeg ·
- Journal & harvest trackingSiltwell · Free (photos, harvests, 12-month history; unlimited on Pro)GrowVeg · Journal with notes, photos & harvest data; follow-on year plans
- Watering guidance from the live forecastSiltwell · FreeGrowVeg · Not an advertised feature
- Weather-station / soil-sensor connectSiltwell · Pro: Ecowitt, Davis, Ambient, WeatherFlow TempestGrowVeg ·
- How-to contentSiltwell · Guides at siltwell.com/learnGrowVeg · 440+ how-to videos and a deep guide library
- PlatformsSiltwell · Web + iPhone + Android, works offlineGrowVeg · Web browser (desktop & mobile)
- PriceSiltwell · Core is free. Pro $22/yr founding, list $39 (14-day trial)GrowVeg · $35/yr auto-renewing ($50 one-year, $85 two-year)
GrowVeg details verified from growveg.com (features, trial & subscription pages), August 2026. The Almanac Garden Planner shares the same engine and pricing. Spot something outdated? Tell us.
When each one wins.
Pick Siltwell
If you want a real free planner, or live weather doing the work: watering guidance from the forecast is free, and Pro connects your own weather station and soil sensors for microclimate-calibrated frost alerts. Plus native phone apps that work offline in the garden.
The honest line
GrowVeg plans from your region's climate history; Siltwell plans from your yard's actual conditions. If you already pay for GrowVeg, its planner won't disappoint you — the weather intelligence is what you'd be crossing over for.
