Switzerland 
Are marrows just large courgettes or are they different plants
20 Aug, 2010
Answers
Almost, although proper marrows (like those you used to take to church at Harvest festival) are bigger. When small they taste like courgettes, but they attain greater dimensions by a long margin, and tend not to be such prolific croppers.
Phil J
20 Aug, 2010
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No, same plants - if you leave the fruits on long enough, you end up with marrows.
20 Aug, 2010