I am a little caonfused on Venosa. I had it out in an uninsulated porch but the pitcher's water froze in them so I thought it was way too cold for it. So my question is what is the known cold hardiness of Venosa. Please give me a range. Here is an example. Venosa can take 45 F down to 10 F for dormancy. That is how I would like an answer for this question. Thank You.