Water them well, feed them often and keep the vents shut , they want a
buoyant atmosphere, humidity as near 100% as you can get it,, this is why
they don't mix well with tomatoes.
If you are growing both together then you could screen off the Cues with a
polythene curtain.

--
David Hill
Abacus nurseries
www.abacus-nurseries.co.uk