What Temperature Can Red Wigglers Survive?

Redworms tolerate a wide range of temperatures, however, the ideal temperature is between 55 – 77 degrees F. Bedding with a temperature above 84 degrees F. is harmful, sometimes fatal, to redworm populations.

How cold can red worms survive?

Temperatures below 32℉ are fatal, and will most likely kill off your entire composting community. On the other side of things: Temperatures that exceed 80 degrees are almost as dangerous as freezing temperatures. Red wigglers are not likely to survive above 85 degrees.

How cold can worms tolerate?

Worms are happiest when the temperature is between about 55 and 80 degrees F. (12-26 C.). Colder weather can kill worms off by freezing, but they are in just as much danger if unwatched in hotter weather.