Hi, 2 years ago, I bought a lemon tree at Bloom and all is good, it is 6ft hight and doing well, the leaves are healthy, but the little white flowers it produces continuously are brown, no white ones being produced at all any more, a month ago they were smelling lovely and where all white. Plus you can see the shape of a wee lemon producing but then it just falls off. I give it tomoatoe feed every two weeks, water it with half a watering can every two weeks and it is in the sun room in a large pot. Anyone know the secret or anyone spot what I am doing wrong?