So funny that marrows crop up! I was handling a sizable exemplar at a Turkish grocery store just yesterday! It was a fair bit more yellow than a zucchini, btw.

> but a marrow is always a much larger and infinitely less flavoursome growth

That's how I've always seen them. I only learned of marrows while in England where they have loads of local competitions every year to produce the biggest marrow.

It's funny that by picking them earlier on they taste better - with fruit on the other hand, it is usually quite the opposite, isn't it?