penstemon cuttings

How soon should you pot these up after they have struck a root? I have around 20 cuttings pushed in round the edge of some 6" pots which I planted about 4 weeks ago using 50% seed compost and vermiculite. What's the best potting compost to use when potting them on?

 

I should leave them where they are untill new growth starts in Spring. They are more likely to die in the winter if disturbed now.

 

They're stood on a tray in an unheated greenhouse with the door open and they seem to dry quite quickly so I've stood them on some capillary matting

 

Bump...Any more input on this one, I'm a complete novice with cuttings!

 

Madahhlia's advice is spot on, which is why maybe no one else has replied.

 

Thanks for that