All about Garden Shrubs

Having looked round my herbaceous borders I have too many purple flowered shrubs . Luckily I have a hydrangea which because I am on an acid soil has lovely sky blue flowers when it comes out. I planted flowering alliums in front of my purple rhododendron not realising the flowers have an identical colour and looking from my kitchen window can't be distinguished. I will move them next year.
Every year I move plants around as I try to picture how plants would look in various positions.

All my planting combinations are accidents. What doesn't work this year I try to change next year...though a good friend of mine keep asking me when I will move a peony I have in one border. It's bright orange/red and clashes badly with some pink roses - they always flower at the same time  I've not got round to it yet!