Calendula.
California Poppy. (Eschscholzia californica).
Campanula latifolia. (Bellflower).
Cardinal Flower. (Lobelia cardinalis).
Carnation Flower. (Dianthus).
Catmint. (Nepata). ‘Dawn to Dusk’ Hybrid.
Cherry Bush. (Prunus incisa). ‘Kojo-no-Mai’ . Small Ornamental Cherry.
Chrysanthemum. (Daisy Family).
Clematis. (Teksa Variety).
Columbine. (Aquilegia, Granny’s Bonnet).
Coral Bells. (Heuchera sanguinea).
Coreopsis. (Aster, Daisy Family).
Cranesbill. (Geranium sanguineum).
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Creeping Forget Me Not. (Boraginaceae Family).
Creeping Phlox. Polemoniaceae.
Creeping Zinnia. (Yellow Prince).
Crocosmia lucifer.
Crocus longiflorus.