Gallee - I'm not having a laugh, it's a real thing. It even has a wikipedia page.
. If you read you'll see there are lots of different names for it. It's not actually garlic bulbs growing in the ground, it's garlic flavored leaves and flowers.
I'm not sure it you can sew it umberalles but I'm not sure you'd want to as it's one of these things that takes over the area it's in! If I head out again soon I'll get a picture with my camera rather than my phone so I can post it up.
As for use and preparation the best thing to do it to use it to make a pesto, then use this as a sauce or to marinade meats. You could use it as a nice rub for lamb or somesuch! I have pictures of a rabbit dish I did for college using the flowers and pesto, I'll post shortly. For the pesto there's no need to blanch it, but if you were to use it straight away for a sauce the best thing to do is to blanch the leaves, get everything else your using for the sauce ready (e.g blanching other veg) then blitz it all up and strain it.
Langdang- Had not heard of this programme, I'm without TV since September but will follow up that link, looks like my kinda thing.
Thanks for that nice bit of info Kess73, would be lovely in a soup infact! Must try it out.