Everyone Says "Wait for Warm Soil" — Here's What Soil Actually Needs to Hit 60°F

https://www.active-bookmarks.win/how-an-extension-office-soil-test-stopped-my-annual-fall-cleanup-nightmare

How my backyard experiment lost half its seedlings by planting too soon I’m going to be blunt: we all pretended that “last frost date” was the rule and started sowing when we felt optimistic