Considerations
As a general rule, the cooler the temperatures the longer a morel mushroom will grow before it goes bad. At 65 to 75 degrees F, a morel mushroom has a one- to two-week lifespan in the wild.
Function
In order to regenerate, morel spores produce something like a network of underground branches called mycellium. Mycellium may sit dormant for many years before triggering a bloom of morel mushrooms.
Features
Morel's mycellium requires a certain amount of of moisture and warmer temperatures in order to produce tiny mushrooms, called "raisins."
Effects
There are many different varieties of morels, and they all begin to spore out and deteriorate at different temperatures.
Types
The Conica morels, which appear after forest fires, usually begin to degrade and produce thousands of spores when the temperatures are over 70 degrees for more three days or more.