More to explore:
Cat Thyme- PCATH photo
argyranthemum tracey compact shrub suitable for gardens & large tubs
Ceanothus ‘Concha’ a shrub max 3m/3m but can be pruned to keep it small
Indigofera heterantha | Lambley Nursery a shrub, 180cm/150cm
drought tolerant & very tough shrub
maybe nice for the main bed and/or for the garden by the entrance
The secret garden....
Eryngium Blue Sea Holly- PERPL photo
very hardy. flower jan to april. will look good with the Agastache and coneflowers.