Doronicums for early season succession planting
I am contemplating in interplanting Rudbeckia laciniata with Doronicum orientale 'Magnificum' (or D. plantagineum 'Miss Mason), so the Rudbeckia's late season show is preceded by early colour from the Doronicum. Any thoughts as to whether this is going to work? The bed is S.W. facing, chalky soil (but decent/improved and can be kept watered).
I am also using Aquilegia chysantha for a similar purpose, teamed with later flowering Helianthus 'Lemon Queen'. Am I overlooking any other early flowering cream to yellow coloured perennials which would cope with being swamped by late developers after flowering?