Posted: 21/07/2015 at 18:51
Good news, Lily......this s probably 'bud drop'. Although a little worrying if you haven't encountered it before, the plants will recover.
Basically, it is caused by variations in temperature (hot days and cold nights). The buds turn yellow/green and fall off when touched.
There is not a lot that you can do about it, you just have to wait until the weather settles and the nights get warmer. Do not feed plants until the buds start to set and flower.
It may be worth noting that bud drop can also be caused by watering with cold water from a hosepipe....... use water that has stood for 24 hours if possible.
Leave as much growth on as possible, including tendrils, until it passes.
PS, I notice you have a little distortion in the leaves, this may indicate they are hosting greenfly.