[lisa]

Does anyone have any tips for helping a bald patch of grass grow?  been living at our house for three years and we have very patchy grass that we ve tried everything to make good!! when we mow it it looks like my husbands hair!! sparse and thinning!! (he'd kill me if he know i put that)
 would like it to be nice enough to sit on in the summer, if we get one. :?

[noshed]

Depends what's causing it - dog/cat wee, fungus, moss, alien spaceships. You could just cut the mouldy chunk out, with a fair bit of the soil underneath,  put some new compost in and then either seed or turf it if you've got any spare. It's all growing like mad now so it would be a good time for surgery. Pity it doesn't work on hair...
If it's a very big patch you could give it a good raking to make sure it's not suffocating in moss, then put some seed and compost in. Maybe spike it a bit as well.
Or plant spuds.
If there's a lot of daisies, apparently this means you're short of lime so  a light dusting might be a good idea - although you're supposed to do this in winter. But a few handfuls of blood fish and bone would be good anyway - for the gras and for the worms.