Phlomis russeliana

Hooded pale sulphur yellow flowers held in tiers on erect stems.   An impressive structural perennial particularly when frosted in the Winter garden as at RHS Rosemoor.  Worthy of inclusion for this feature alone. 

Companion plants:  Agapanthus, Euphorbia wulfenii, Euphorbia mellifera, Stipa gigantea, Asters, Echinacea, Acanthus, Miscanths, Molinia.