I love Geums, and I am in envy of your collection
In bloom at present I have Geum 'Lady Stratheden' (yellow) and Geum 'Mrs J. Bradshaw' (Red).
Grown from seed (Chiltern Seeds).
I also have an orange one which self seeded beside an old shed in very poor soil.
When I saw what a good plant it was I transplanted it into a flower bed.
They don't have pretty foliage, but they all have lovely flowers which are airy and look well from a distance - something which helps the appearance of a flower bed.
Keep up the good work Eric - I'm enjoying looking at the treasures in your garden.