Bitter Courgette - Fothergills' Zucchini and Unwins' Tristar

And perhaps those other two tht are taking over the world should be binned?? GheyRe growing a foot a day at least.

How big do squash really grow?

It would be interesting to let them grow and see what you get, but I wouldn't eat them. My butternut squash plants last year were about 6 metres long.