[liam affley]

Hi,

Just found strange yellow blotches on one (of eight) plants.  Photo attached.  Never seen this before.  Anyone know what it is? Any advice welcome.

Thanks in advance

[mumofstig]

Pick the leaves off if you want, but it doesn't look like anything I'd worry about if it was on my plot.

[Gardener and Rabbit]

Have you taken a look at what those yellow blotches look like on the underside of the leaf?  If they develop a mouldy growth then it's downy mildew.  I've seen similar before, it might be more common in damper places like the NW.

G&R

[JoshP]

Look on the underside of the leaf. Could be white blister