Diseased broccoli

I have been growing purple sprouting broccoli through the winter. It looked great until the weather started to get warmer and now the lower leaves appear to be turning yellow, with grey splotches and wilting Does anybody know what this is and how/if I can treat it?

 

Hmm, Could be mildew, now the weather has suddenly turned warmer & wetter. Is there any sign of a powdery mold under the leaves ?

If so, then a fungicide spray will be needed. I'd remove the affected leaves first to try to stop it spreading.

 

If its just the lower leaves I wouldn't worry.

If things start looking not good at the top, it might be a fungal problem, but cant think what.

 

My first thought was frost damage Pete, but not if they've tolerated the snow already. You are probably right, just natural die back before going for the growth spurt.:pickflower:

 

Ziggy My experience of "purples" is from a few years ago, and they used to be very hardy.

Used to grow them every year and never a problem.

 

I think it's just old leaves dying off from the bottom - as most plants do.
I would leave well alone and see what happens. If the brocolli still sprouts, that's the bit you are going to eat - not those old leaves.

 

Thanks, I will have another look today with the above advice in mind. It's my first time growing broccoli (or anything through the winter!)