There is absolutely no reason not to compost rhubarb leaves - just don't eat them. They will compost down like anything else. Potatoes aren't advised because of the risk of blight but anything else which isn't woody, will compost. If in doubt shred it first. No doubt there are other things to be wary on but someone will tell you.

Hi Ronco, welcome to g o y, I would not put any perennial weeds onto the compost heap, especially the tap rooted ones, although you could use just the leaves, nor any cooked food, as these do not rot down very well because a garden compost heap doesn't get hot enough , and it attracts vermine, Derek.

Leaves are better turned into leaf mould. I agree with Derek no cooked food bung that in the brown bin, if they allow it. Smash up any legume stalks or brassica stems.

Roots on perennial weeds like docks and dandelions, and any seeds/seed cases are an issue if your compost heap doesn't get hot and isn't aerobic, which it probably isn't. As the others say, remove the roots and any seeded parts and compost the leaves - the exception is bindweed - best thing to do with that is burn it, although, if you've the time, you can pull off the individual leaves and compost those, and just dispose of the stems and root material elsewhere. Twiggy, woody material takes much longer to break down, so chipping it first is useful. And I'll confirm that rhubarb leaves can be composted.