According to the latest weather reports I’ve seen, the temperature might get down to 22 degrees tonight.
I use those plastic containers that you put hermit crabs in.
Put a paper towel in the bottom so they can grip better I live in Houston it’s about 60 to 80 degrees and have only two milkweed plants.
After a couple of attempts, it should start drinking.
As far as letting it go, if there are any flowering plants, and if the temps are above 50, you can probably let it go, although it may really have to hunt for food.
Yesterday I was so happy to see 5 caterpillars just eating away so in my ignorance I cover them with Tull thinking birds were the predators I was wrong only one survived and I brought it inside (I read how to do it inside a glass container with a nice juicy branch he’s eating. They tend to eat for a while, then just sit there, then eat some more. If you bring them inside I would provide them milkweed until they turn into chrysalis I live a little NW of New Orleans and after a summer of no monarchs or caterpillars, I counted as many as 15 caterpillars on my milkweed plants during December.
The stem in a small bottle with water and small neck. ( I think this large lady bug looking bug, who kinda appeared last year has been the reason for no monarch caterpillars during these last 2 summers).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. my mom and i found a monarch butterfly on our front step. when we took him inside and warmed him up he started to fly around.But what about Monarch Caterpillars (not Butterflies), how low can the temperature be before they begin to die? I’ve been wondering that myself, but haven’t come across anything on it. I know that isn’t cold for some of you BUT I must have at least 50 Monarch cats munching in my yard. It will get in the 60’s today with lots of sun BUT it is supposed to rain by Sun. we put him under a big strainer with banana and apple slices.They can survive temperatures below freezing for short periods of time, but the bigger issue is it will need a source of food and if there is snow on the ground, you probably don’t have any nectar plants for it to feed. However, I do have a solution, and if you do a search on my blog, I’m pretty sure I have some posts and a video or two about how to do what I’m going to suggest.You can feed it gatorade, or this juice product we have in the States (not sure if it’s in Canada) called Juicy-Juice. You can then try placing the monarch on the cotton ball.Of course, they don’t move hardly at all, just secure themselves to the leaves and wait until warmer temps.