Sep 19, There are three groups of sweet melons – and canteloupe melons, with their orange flesh are the best ones for us to grow in the UK. You can. Melons. There are three groups of sweet melons. Canteloupe melons, with their orange flesh are the best ones for us to grow in the UK. You can also grow. May 30, Few crops so require a greenhouse as melons. Explore with Bob the amazing range of plants you can grow in a greenhouse or conservatory. I don't know about you, but don't watermelons tend to conjure up images of But that doesn't make them impossible to grow in the UK and once they get started. Jun 7, Hello All I know I'm new to the forum (and not sure if I can post pics yet?) but I love melons, managed to get 2 watermelons to grow last year. How to Grow Melon Melon, including watermelons, can be successfully grown in the UK. They are a tender annual, suited to growing in containers or growbags.