Posted: 06/12/2015 at 07:22
The spray might have affected new growth which is quite tender. There's usually no need to spray for aphids at this time of year as they don't survive cold weather. I don't use insecticides for aphids - I just brush them off with my fingers, or wash them off with a jet of water. I don't like using insecticides as they don't discriminate between good and bad insects, and we need all the good ones we can get (bees, ladybirds etc).
But,most outdoor plants don't like being indoors - they really really don't like it .
Most successful indoor plants come from tropical or arid regions where they are used to higher temperatures and quite different conditions.
Also over-watering can cause leaves/shoots to blacken and die - it's highly unlikely that your plant will need watering if it's outside this winter unless it's in a very sunny spot. Only water when the soil an inch below the surface is bone dry.