what is the temp tolerance of moses in the cradle? do I need to cover after a certain temp?

What is it ?
I've not heard of it :/

That is the snag with common names... if you google this you get two very different plant possibilities - Cramos can you take a photo please

Tradescantia spathacea - moses in the basket, also known as boat lily and oyster plant. Its a tropical tender perennial, makes a good indoor plant.

Or it could be this http://www.plantoftheweek.org/week248.shtml Drc Neither seem to be frost hardy...