Help needed identifying pest on tree
I'm a novice gardnener. Just got my first garden about a year ago. I've managed to rescue it from being a rubbish tip but am now having trouble with various pests - mostly slugs and snails devouring the lupins and delphiniums.
However, today I noticed something on the autumn-winter flowering cherry tree I planted ealier in the year (it was a bare-root plant). Some of the leaves seems to have been eaten and I can see red things at the base of the leaves that look a bit like tiny eggs to me. Anyone got any idea what this is and what I can do. Any advice is much appreciated.