Observed arrival · 2026-10-21
Sow by Season turns local frost dates into a planting plan
A free gardening planner for Canada and the US that uses a chosen town’s frost dates to guide what to plant and when.
○Open
⊠Login
$Paid
†Ads
✦Pretty
●Pro
◎Niche
◉Human
⚑Risk
ƒJS
- For
- Home gardeners planning around local frost dates
- Worth noticing
- The site says its calendars cover towns over 1,000 people in Canada and the US, using 1991–2020 daily station records.
Field notes
The homepage offers both a town-first route and a crop-first plan, with examples including tomato, peas, lettuce, carrot, winter squash, and garlic. Its seasonal guidance connects tasks to frost timing, including starting warm-season crops indoors before the last frost and counting back from the first frost for fall crops. The site identifies NOAA GHCN-Daily and Canadian government records as sources for its 1991–2020 frost data.
Observed signals
Read the marks
Editorial observations of this landing page, not a rating.
○OpenPublic substance visible
✦PrettyNotable craft visible
●ProPolished or operationally mature
◎NicheUnusually specific use
One card from the complete issue