Grass Curing defines the percentage of cured (dead) grass relative to green growth. Generally speaking, through a season, spring will often starts at 100% as snow recedes, leaving dried, dead matted grass at peak volatility. Then, in summer, curing diminishes as grass grows and greens; becomes fire barrier when cured-to-green ratio falls below 50%. In fall, standing grass begins curing, reflecting increasing volatility as percentages rise.
Grass Curing is the closest Canadian equivalent to Herbaceous Live Fuel Moisture (LFM), but is represented as a simple coefficient or scalar based on the time of year. In contrast, Herbaceous LFM is influenced by vegetation type, seasonal changes, temperature, humidity, precipitation, and geographic factors such as solar exposure.