Preselected calculator · cropSeed Starting Backward Calculator
Seed Starting Backward Calculator
Kale.
Kale is applied to the real calculator input below. Review the visible assumptions and source scope, then adjust any details that differ from your situation.
Preselected valueKaleWork backward from the last frost date to plan indoor sowing. Inputs stay in your browser.
Browse croptomatoespepperslettucebroccolicarrotscucumberssquashbeanskaleonionsflowersherbscornpeascabbageeggplantcelerybeetsspinachpumpkins
Preselected reference valueKaleThis value is applied to the real calculator input. Adjust the remaining assumptions and verify the visible source before relying on the result.
Your result
Mar 16, 2026
Work backward from your local last-frost date by the crop's indoor-start lead time.
Why this result
Cropkale
Last frost dateApr 27, 2026
Indoor lead time6 weeks
Start seeds indoorsMar 16, 2026
Timeline
Mar 16, 2026Start seeds indoors
Apr 27, 2026Last-frost reference
Read before relying
Context matters.
- Cultivar, transplant tolerance and local microclimates can shift the planting window.
Rule set 1.1.0
Source & calculation QA reviewedSources & scope
The calculation guide and this source trail show what the result means, where the rule came from and when it was last reviewed. This is source-and-calculation QA, not a claim of medical, legal, tax or other professional review; time-sensitive decisions still belong with the linked authority.
JurisdictionUser-provided values — verify local or contractual assumptions
Last reviewed2026-08-20
Next review due2027-02-20
Review scopeCalcSpan source & calculation QA
PrivacyNo input upload