It’s getting cold here in Houston. According to the latest weather reports I’ve seen, the temperature might get down to 22 degrees tonight.
Although we’ve been keeping a few Monarch Caterpillars indoors, we’ve kept several outside, we just covered them up to provide some insulation.
As we were covering our plants and pipes tonight, Leecy and I also decided it might be a little chilly for the Monarch Caterpillars that have been in our outdoor enclosure.
Little did we know we had 15 Caterpillars! Fortunately, we’ve been protecting much of our Milkweed so we should have plenty enough for them to eat.
That got me to thinking. How cold can it be for Monarch Caterpillars to survive? I was able to find out that Monarch Butterflies can crawl at temperatures of 41 degrees, and need a temperature of 55 degrees to be able to fly (see here for reference). In terms of mortality, Monarch Butterflies can survive temperatures of around 17 degrees, but not for very long, and around 50% of Monarch Butterflies will die at this temperature.
But what about Monarch Caterpillars (not Butterflies), how low can the temperature be before they begin to die? Unfortunately, I couldn’t find the answer to this question.
Can anyone help answer the question above? I’m really curious.