Filipendula palmata 'Nana':
Shorter form of meadowsweet with heads of frothy pink flowers above dark green divided foliage. Prefers moist well-drained soil. Hardy. Up to 40cm.
Geranium 'Ivan' (Cranesbill 'Ivan'):
Vibrant magenta-pink flowers with a dark black centre above yellow green leaves. Leaves turn red in autumn. Hardy. Up to 50cm.