frost protection

Methods of a passive or active nature that serve to reduce the damage to plants during a frost period.

Passive methods include variety selection, site selection, and planting date. Active methods include heaters, fans, flooding, sprinkling, windbreaks, mulching, etc.

Any function of time f(t) is periodic with period t if f(t) = f(t + τ) for all times t, where τ is the smallest number for which this equality holds.