How does grass grow?

[DiscoStu]

I've sown seeds for a new lawn 2 weeks ago. It's a Homebase bag containing 2 different types of seed. Now, a fortnight later I have a lot of growth, but it's very patchy. I'm not sure if it's just that one seed germinates faster than the other or if there's some seed raked in further which hasn't come through yet.
But what I mostly want to know is this: does one seed=one blade of grass? Or does one seed produce several blades?
I'm trying to work out if my lawn will thicken up or if I need to overseed to fill in the patchy bits.
I'm new to gardening...

[Thunderbird+]

Hi DiscoStu,
If you have sown the seen evenly at the correct rate, I feel sure that over the few days, you will notice it becoming thicker and thicker as more seeds germinate as they are unlikely to germinate all at once.

Initially each seed will produce just 1or 2 fine blades and I can see why you think it's looking sparse, so I'd give it a while longer to see how it developes and over-seed it later if neccessary.
Wait for the grass to reach at least 2" before making your first cut and then set your mower on a high setting.
As it is cut more and more, each individual grass plant will produce more leaves at the base to hopefully form a good thick sword of turf. Good Luck. Tbird+