Digital tools.
Rooted in evidence.

Free checks and practical guides. No account. No email gate.

1. 01

   Climate check

   Know your winter limits. Check estimated hardiness, frost season and chill hours for places worldwide.

   Live now↗
2. 02

   Frost-date calculator

   Find last spring and first autumn frost dates for a US ZIP, with three risk levels.

   Live now↗
3. 03

   Swale / catchment sizer

   A planned free tool to estimate catchment runoff and swale storage from area and rainfall.

   Coming soon↗
4. 04

   When to Plant a Food Forest

   A planned food forest planting calendar by climate zone and hemisphere, with local frost and season limits.

   Coming soon↗