Posted: 03/08/2014 at 19:32
If it's grown like wildfire it's probably very thirsty as it's roots won't have developed enough to take up sufficient water to cope with the heat we've been having - plants lose a lot of water by transpiration in the hot weather.
I'd give it a good soaking - two buckets full now and another bucket full tomorrow evening. Then a bucket full every other evening until the hot dry weather is over.
I think it will survive; you may lose some of the new growth, but it'll grow plenty more next year and it's roots will be more able to cope.
A little bit of leaf nibbling shouldn't be a problem - passion flowers are pretty tough when they get going.