A year after it was laid around a new build the lawn is in serious decline inspite of spring feed (and light spring scrification owing to surprising build up of thatch). The recent photos of the soil profile show (hopefully) that the turf was laid on a layer (maybe 4") of 'compost' directly on top of your usual compacted layer of clay and stone.
The turf seems to have totally exhausted the compost (recent proliferation of Black Medick) and the roots arent making much progess into the subsoil. So a number of questions:
- Would you normally rotavate organic matter to a prescribed depth into your newly made ground or just layer it on top?
- Is there a standard depth recommended?
- With such a definate boundary between organic layer and subsoil (almost like being in a pot) do I carry on feeding or start again
- Have the landscapers done anything 'wrong' or is it just to be expected with new build?
Any recommendations appreciated (it does seem to have been a stressful spring for lawns around Bristol generally unless its something I'm doing fundamentally wrong!)