Posted: 29/01/2016 at 15:30
Absolutely agree with Fairygirl (I usually do) e
It would've been fine outside, but as it's been indoors it'll be better off in the cold-frame to harden off, as long as it gets plenty of air, and plant it out in the spring.
Be careful not to get that sap get on your skin as it can make your skin photosensitive and on a sunny day can cause nasty burns.
I like E. martinii - I've also got one in a pot outside waiting for me to find it a permanent spot in the garden.