Veronicastrum virginicum 'Blue John'
Nemesia fruticans
Zaluzianskya capensis
Nemesia Hybr. 'Karoo Blue'
Nemesia fruticans 'Mareto blue'
Diascia barberae
Gomphostigma virgatum
Scrophularia grandiflora
Veronicastrum virginicum
Buddleja globosa
Anarrhinum bellidifolium
Verbascum phoeniceum
Verbascum speciosum
Buddleja alternifolia
Buddleja crispa
Buddleja davidii
Sutera cordata
Verbascum nigrum