SOWING GRASS SEEDS ON PATCHED LAWN

thistletown71

Hello Folks

When is the latest time grass seed can be sown onto patched lawn? Also when is the first time it can be started?

Thanks

bcpathome

It should tell you on the container or packet 

Fairygirl

It largely depends on climate and temps. 
Where you are @thistletown71, September might be too late, although it's often touted as being a perfect time. August into early September might be ok, as long as you have enough moisture for it.  
In some parts of the UK, seed can be sown in March, but again, it's about temperature more than anything. Cold wet soil isn't great either, so where I am, April isn't even that great, but I've done it in June because there's moisture and enough warmth. When I decide to create a lawn in my back garden about 6 or 7 years ago, it was done in June.  It needs to be in the decent teens to germinate. 

thistletown71

Thanks Fairygirl. I'm up in Bonnie Dundee

Fairygirl

I remembered this time that you were further north than me   
There's a house near me, and in March I noticed they'd cleared the front garden and sown seed . It was certainly quite mild compared to normal, and drier too. They had a sprinkler on it, and they were pretty fortunate because it did germinate and grow well. By April, it was a decent green 'haze'. In most years, it would have been too cold and wet for it to even germinate.
I haven't been past that way since then, so I don't know how it looks now.