We relaid our lawn in April. It's hopelessly overshadowed by tall conifers (we're going to get them cut back this autumn but didn't manage it last autumn), but at least it had as good a soil as possible - large amount of composted manure dug in, and a full dose of organic fertilizer pellets (balanced). I'd have said that that ought to last it for months before it needed feeding again. It was somebody else's idea to deg it with chemical lawn fertilizer last week (some stuff called Aftercut, I forget the details but pretty strong). Well, it wasn't done evenly enough, and killed off several patches of the lawn. What's the best way to proceed?
How often do you really need to feed lawns, anyway? Before it was relaid we hardly ever used to get round to feeding ours, and the sunnier part thrived for several years until it got very compacted.
Before the fertilizer incident, the new lawn was growing fine. But it did keep getting these squishy, flattened brown patches about six inches across, for all the world as if somebody had ground it in with their foot. Never come across those before. Can anyone explain?
Many thanks.