Potting started

Today I started sowing seeds in pots to put in the mini-greenhouse outside my house. I sowed pumpkin (probably too soon), Gardener's Delight tomatoes, Roma tomatoes, purple-sprouting broccoli, Bedford Brussels sprouts, and a half-tray of basil. The Italians grow rows of basil. Joe puts it in with his tomatoes when bottling them.

The potting compost I used was dreadful - Tesco's Cheapest - I had to crumble every handful before using it, and it was full of great fibrous lumps.

I've still got a lot of potting to do, but I will leave the courgettes and cucumbers till a bit later.

What is it?

Someone gave me this plant, and told me it was a courgette. It isn't, clearly. But what is it? I don't know. I will have to wait and find out. I hope it's not a boring old marrow. I am rather hoping it's a melon, but I doubt it.