watering (i'm new to gardening)
we have a small London zone 2 garden. it was concrete when we moved in and we worked VERY hard last year to turn it into a small square lawn bordered on two sides by narrow (2') borders.
ive realised I have no idea how often to water! if something wilts then yes obviously, but I mean watering for maximum health and growth
if it doesnt rain, after how many days do I need to water? how much? how often?!
it's been dry for a good week here and the lawn is alredy yellowing...
any advice greatfully received (I feel quite a fool for needing to ask!)