Posted: 27/11/2016 at 11:48
We're planning on removing the paving and slate chips of the house we've moved into, with the hope of laying turf and raised beds. However, I've received conflicting advice from 2 professional gardeners.
Our garden is flat, 9m long X 4m wide. We're in London, so it's a thick clay soil and it faces North North East.
Ok, both gardener A and B suggest putting the garden on a slight slope when we lay topsoil, so that rainwater can run back towards the house where there are French drains at the patio.
Gardener A said to excavate down 20cm of the current matter which is sharp sand, before we lay topsoil. Thankfully, there was no builder's hardcore. Gardener B said no need, as the sand will help with drainage. This one is important because it either involves a lot of digging and large amounts of waste removal - or not!
Gardener A said lay a channel drain under the soil (I am clueless about these - where does the water end up?). B said no need.
A also said to mix some compost or manure in with the topsoil to condition it for drainage. B said no, turf is best without compost as it's too crumbly.
Finally, A said to get a fencer to add gravel boards before we have the topsoil delivered, and B said to affix them afterwards.
Can anyone help? Both are professionals! Thanks