Rusty looking Rhubarb

[swampie sue]

Hi,

This year my rhubarb has not done well at all and the leaves look like they are covered in powdery rust.

Can anyone tell me what it is please.

Swampie Sue

[Nicos]

Mine get it each year in the Autumn, but as the leaves are dying back, I just leave them, and burn the leaves in the winter.
Not sure if this is the right thing to do, but it's certainly not affecting the following years crop!!
I suppose you could spray it with a fungicide, but I try to be organic.

[swampie sue]

Thanks, do you know what it is