Is there a website where you can buy food etc for growing show leeks and what do you use to measure them?

My dad has joined his local leek club and is growing show leeks. For xmas I would like to buy him a few bits and pieces he needs/would like but I know very little about it and the staff in garden centres down south don't seem to know much about this northern pasttime either. I know he buys specific plant food but I'm not sure where to find it and there is apparantly a gauge you use to measure the leeks but I don't know what it is called. If anyone out there also grows competition leeks and can suggest anything I can buy (neccessary or silly) to put together a little kit I would appreciate it.

Is there a website where you can buy food etc for growing show leeks and what do you use to measure them?
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Reply:If you look in a specialist gardeners magazine eg Practical gardening you will find speciallists for all types of veg.Secret with growing leeks is to keep them covered with brown paper while they are growing.