Soil temperatures under an organic mulch will likely be lower than that of bare soils in the summer but higher than that of bare soils in the winter.

Question

Quizplus · Accepted Answer

Organic mulch acts as an insulator, keeping the soil cooler in the summer by reducing evaporation and preventing heat from penetrating the soil. However, in the winter, the mulch acts as an insulator and keeps the soil warmer than bare soil.

Soil Temperatures Under an Organic Mulch Will Likely Be Lower