Posted: 30/05/2015 at 10:32
I think it's just been very unhappy for quite a while.
If you've only just cleared the grass etc away from it then it will really have been struggling. Then the poor thing produced some lovely blossom which probably exhausted it. That may have been its dying gasp, but it may recover if it's not stressed any more. I'd give it a thick mulch with some soil conditioner from the garden centre (not right up to the trunk - leave a small space) and then leave it, only watering if the soil under the mulch is dry.
Don't feed it - just talk nicely to it and hope ... we'll keep our fingers crossed