I rakekd over and re-seeded some bare patches (builders' skips
) last Sunday and it rained on Monday - perfect timing. We're still getting some spells of warmish sunshine so I'm hopefull that I'll have a green lawn before very long. A packet of grass seed cost me £7.99 if I remember correctly - I used about one tenth of it - the chap at the garden centre worked out how much of the special Patching stuff (a mix of coir and seed etc) I would need and he costed it to over £50! I'm happy to give the cheap and simple solution a go 
Leslie, can you start a new thread for your question? Then the tomato experts will see it 