Posted: 14/07/2017 at 06:33
Blossom on an apple tree at this time of year is not good news ... It indicates a plant under extreme stress.
It sounds to me as if that tree has been so thirsty it thinks it is dying and it is desperately trying to reproduce itself before that happens.
The fact that ants have been nesting in the pot indicates that the compost was much too dry - ants don't choose damp regularly watered pots to nest in.
Aphids may cause damage but they won't kill a healthy tree ... drought will