When you put a plant in direct sun, it starts to transpire very fast because all that light makes it use up water to make sugar (the primary reaction of photosynthesis requires the water molecule to donate a hydrogen to the new carbohydrate molecule).
You can slow it down by decreasing the light intensity.
Also sniff around the drain hole of the pot and if it smells funny, you have a problem. Root rot is the other cause for a plant looking close to death all of a sudden like that, and it's the reason to have LOTS of drainage and only water when the soil is dry.
stinkyattic Reviewed by stinkyattic on . Stinky!!! Help!! 911 again Stinky!!! I've got a major prob again... one of my plants seems to be dying... i have no idea what's wrong with it... i left it out today to get some sunshine... the other 2 seemed to be fine... but this one... the leafs are hanging downward.... and doesn't look healthy at all...!! Wanna tell me what's wrong with it?? Rating: 5