cotoneaster Wateri

Gabriela-

I bought a Cotoneaster Wateri and after a month of doing really well, its starting to turn yellow (although I can see its growing new leaves).

Its planted in a sunny small garden.

Its only early May so it should't be turning this color.

Any help is welcome!

Many thanks

Gabriela

nutcutlet

how big is it and how much is turning yellow?

Photo?

and is it in the ground or a pot?