Venus Flytraps in Bloom
 

First flower of the season, more to come:

Very nice. Make sure you let that bay rest for the winter.

It's outside, in the ground just outside of Phila PA. Winter rest is not a problem!

I am jealous of your naturally available options. I had to buy a little fridge for that purpose.

They bloom?

Indeed they do!

Nice! Bring on the carnivores haha

How much below freezing can they handle? And do they need soil conditions on the acidic or alkaline side?

Acidic, I believe. I don't know about temperatures. I put mine in a cold window and hoped for the best. They bloomed this spring and have been putting out new 'leaves'.
I cannot grow them outside where I live, not reliably. I would have to take measures to protect them. Some people who live in colder climates make their bog garden a little lower in the ground and, in autumn, cover the entire thing with a heavy board, lay plastic over the board and cover the entire thing with leaves. In the spring, they uncover the entire thing. Sort of like growing figs....

Yes they need acidic media without any nutrients in it (I.e sphagnum, sphagnum peat, perlite, etc.)
To give you an idea, I know someone that grows them along with other temperate carnivores outdoors year round in zone 6b