Done some research on our random flowering rhubarb, apparently it’s because the plant is old. Which makes sense as we found the plant on the plot when we took it over when it popped up out of one of our paths.
I’ve now removed the flower stem as all the plants energy will go into the flower and so limit the yield from the leaves/stalks.
Made some rhubarb jam the other night which is great, recommend it on fresh bread or thick cut toast with butter!!