Thermal Mass Buffers Core Soil to 84°F: Galvanized Raised Bed Temperature & Leaching Audit (2026)
Thermal Mass Buffers Core Soil to 84°F: Galvanized Raised Bed Temperature & Leaching Audit (2026) Executive Summary: Soil core temperatures in galvanized metal raised beds remain between 82°F and 88°F during 100°F ambient summer heatwaves, debunking the myth that metal sidewalls cook plant roots. The primary vulnerability is peripheral soil desiccation within two inches of…