Covering hay helps prevent mold growth by protecting it from accumulating moisture, which is a key factor in mold development. When hay is exposed to rain or high humidity, it can absorb water, creating a damp environment conducive to mold and mildew.
A well-secured cover keeps moisture out and maintains a dry environment that inhibits mold growth. Covering hay shields it from direct sunlight, which can cause uneven drying and increased humidity, which also contributes to fungal growth.
