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

https://www.social-bookmarkings.win/warm-march-days-are-a-trap-why-early-planting-often-backfires

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