Canada 
I have just planted Thunbergia plants a couple of weeks ago. Some of the leaves have turned a silvery white colour. What could be the cause of this or is this normal?
22 May, 2010
Previous question
If they were growing in a plexiglas, or plexiglas-based-fiberglassgreenhouse, and weren't hardened off, they might be showing an ultraviolet sunburn on the most exposed leaves.
22 May, 2010