Well they just arrived in the post (fully rooted! ) and I'm keeping them in a makeshift humidity tent. Any suggestions on how to keep them growing well are very welcome.

That's a fine looking plant I once bought a Salvia Divinorum plant from eBay, but it was poorly packed and died a few days after arrival. I ate the whole plant and didn't feel anything.

I don't trust Ebay at all. If it's not against the rules i'll post the site I got these from delt with them before and they're very reliable.

The plants looks nice. Just let them under their tent with some light, but not direct sun light. If temp is above 10 in your country, you can let them outside but still not under direct sun light. In 2 weeks you can remove the tent for one hour, place it again, etc... on a progressive basis until they do not need the tent anymore. Salvia is quite robust as long as it get used to the humidity level. When a plant needs some water it is very visible, do not water them unless the leaves wilt or unless the soil is dry.

thanx alot. I might give them ago outside when its warmed up a bit.