Catmint (Nepeta x faassenii), Lavendula x intermedia 'Provence' (French Lavender, Salvia uliginosa (Bog Sage), Leonotis leonurus (Lion's tail), Penstemon, Santa Barbara Daisy, don't use, very invasive.
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RHS Harlow Carr, Yorkshire One of the main borders at the RHS garden at Harlow Carr, near Harrogate. The planting here, in the contemporary prairie style, is impressive though I felt the garden as a whole disappointing by RHS standards. By UltraPanavision