Clarkia amoena
'Memoria'
"Farewell to Spring"
Clarkia amoena ssp. whitneyi
Clarkia breweri
Clarkia williamsonii
Claytonia sibirica
"Candyflower"
Collinsia heterophylla
"Chinese Houses"
Comarostaphylis diversifolia
'Summer Holly'
Coreopsis gigantea
"Giant Sea Dahlia"
Coreopsis stillmanii
"Golden Fleece"