Posted: 02/06/2016 at 11:23
I'm feeling rather redundant inasmuch as no one seems to have any sweet pea related problems, either that or they have become bored with the thread, or both.
Now I've said that, perhaps I can pre-empt a (soon to be encountered) problem that may well be seeking an answer.
So I'll mention bud drop. This usually happens at the start of the flowering period and is mainly caused by variation 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 bud drop, 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. You can get this problem more than once in a season.
Bud drop can also be caused by watering with a cold hosepipe - use water that has stood for 24 hours if possible. Leave as much growth on as possible, including tendrils, until it passes.
For what it's worth, people who grow cucumbers may also be having wilting/yellowing of leaves, for similar reasons.