I splashed out on some grafted aubergine this year and they have been happily growing on the windowsill for the last few weeks. However they have had a few greenfly, which I have squished off and I decided to hedge my bets by putting one of them in to the grow house which should be reasonably warm being against the west wall of our house. It appeared to e fine for about 10 days but yesterday it was falling over at the point of graft.
Any ideas what I have done to it? Is it still just too cold?