Novice gardener here.
Last year my husband planted an apple
tree in the back garden (no comments that it’s too close to the fence please …). It was from a good garden centre, was healthy and bushy. This year it doesn’t look unhealthy, has a few apples coming but has far less leaves - unlike a younger tree he planted in the front which has less sun but has lots of healthy leaves and so many little apples (I’m culling them as I understand young trees should put their energy into growing roots and leaves rather than apples).
Am I supposed to be feeding the tree? Or watering less? (I water occasionally when I remember to do the garden). Or water more?
I can’t see any damage on the leaves or evidence of disease or pests.
Any advice very gratefully received. Thanks.