Posted: 16/07/2017 at 12:53
Juliet, it's probably been a bit too dry and the grass is growing too close to the trunk and competing with the tree for nutrients. Make a wider circle around the trunk (about 1 metre diameter), give it a good watering (at least 4 bucketfuls of water) and cover the ground where you removed the grass with a mulch of well-rotted manure or compost. You should also snip off all of those weak branches below the label close to the trunk (don't leave a stub.) Do this now and no more pruning until next summer (never prune in Autumn, Winter or Spring as you risk it getting silver leaf disease.)
Keep giving it a couple of buckets of water at least twice a week until the leaves drop.