Berberis

Berberis verruculosa (Warty Barberry)

Brachyglottis

Brachyglottis greyi (Daisy Bush)

Buddleia

Buddleia × 'Blue Chip' (Blue Chip Buddleia)
Buddleia alternifolia (Alternate-leaf Butterfly Bush )
Buddleia globosa (Orange Butterfly Bush )
Buddleia × weyeriana 'Honeycomb' (Honeycomb Butterfly Bush)

Callicarpa

Callicarpa americana (American Beautyberry )
Callicarpa bodinieri 'Profusion' (Profusion Beautyberry)
Callicarpa dichotoma (Purple Beautyberry)
Callicarpa dichotoma 'Albifructus' (White Fruited Beautyberry)
Callicarpa japonica (Japanese Beautyberry)

Calluna

Calluna vulgaris (Scotch Heather )
Calluna vulgaris 'Firefly' (Firefly Scotch Heather)
Calluna vulgaris 'Robert Chapman' (Robert Chapman Scotch Heather)
Calluna vulgaris 'Wickwar Flame' (Wickwar Flame Scotch Heather)

Calycanthus

Calycanthus × 'Aphrodite' (Aphrodite Sweetshrub)
Calycanthus floridus (Carolina Allspice )
Calycanthus occidentalis (Western Spicebush )
Calycanthus × raulstonii 'Hartlage Wine' (Hartlage Wine Sweetbush )

Camellia

Camellia japonica (Japanese Camellia)
Camellia sasanqua (Sasanqua Camellia)

Carissa

Carissa macrocarpa (Natal Plum)

Carpenteria

Carpenteria californica (Bush Anemone)

Carpinus

Carpinus japonica (Japanese Hornbeam)

Castanea

Castanea mollissima (Chinese Chestnut)

Ceanothus

Ceanothus 'Centennial' (Centennial Ceanothus)
Ceanothus 'Concha' (Concha Ceanothus)
Ceanothus 'Dark Star' (Dark Star Ceanothus)
Ceanothus cuneatus (Narrowleaf Buckbrush )
Ceanothus cuneatus var. rigidus 'Snowball' (Snowball Ceanothus)
Ceanothus × delilianus 'Henri Desfosse' (Henri Desfosse Ceanothus)
Ceanothus gloriosus (Point Reyes Ceanothus )
Ceanothus griseus var. horizontalis (Carmel Creeper Ceanothus)
Ceanothus griseus var. horizontalis 'Yankee Point' (Yankee Point Ceanothus)
Ceanothus impressus (Santa Barbara Ceanothus)
Ceanothus integerrimus (Deer Brush)
Ceanothus sanguineus (Redstem Ceanothus )
Ceanothus thyrsiflorus (Blue Blossom)
Ceanothus thyrsiflorus 'El Dorado' (El Dorado Ceanothus )
Ceanothus velutinus (Snowbrush )

Cephalanthus

Cephalanthus occidentalis (Buttonbush )

Cercidiphyllum

Cercidiphyllum japonicum (Katsura )

Cercis

Cercis canadensis (Eastern Redbud)
Cercis canadensis 'Forest Pansy' (Forest Pansy Redbud)
Cercis canadensis 'Ruby Falls' (Ruby Falls Weeping Redbud)
Cercis canadensis var. alba (White Flowered Redbud)
Cercis canadensis var. mexicana (Mexican Redbud)
Cercis canadensis var. texensis 'Oklahoma' (Oklahoma Redbud)
Cercis chinensis (Chinese Redbud)
Cercis chinensis 'Avondale' (Avondale Chinese Redbud)
Cercis occidentalis (Western Redbud )
Cercis siliquastrum (Judus Tree )

Chaenomeles

Chaenomeles speciosa (Flowering Quince)

Chilopsis

Chilopsis linearis (Desert Willow )

Chimonanthus

Chimonanthus praecox (Fragrant Wintersweet)

Chionanthus

Chionanthus retusus (Chinese Fringetree)
Chionanthus virginicus (White Fringetree)

Chitalpa

Chitalpa tashkentensis 'Pink Dawn' (Pink Dawn Chitalpa)

Chrysolepis

Chrysolepis chrysophylla (Golden Chinkapin )

Chrysothamnus

Chrysothamnus viscidiflorus (Green Rabbitbrush )

Cinnamomum

Cinnamomum camphora (Camphor Tree )

Cistus

Cistus 'Ann Palmer' (Ann Palmer Rockrose)
Cistus 'Doris Hibberson' (Doris Hibberson Rockrose)
Cistus 'Elma' (Elma Rockrose)
Cistus 'Grayswood Pink' (Grayswood Pink Rockrose)
Cistus 'Snow Fire' (Snow Fire Rockrose)
Cistus 'Victor Reiter' (Victor Reiter Rockrose)
Cistus × corbariensis (White Rockrose)
Cistus × crispatus 'Warley Rose' (Warley Rose Rockrose)
Cistus × dansereaui 'Decumbens' (Decumbens Rockrose)
Cistus × florentinus 'Fontfroide' (Fontfroide Rockrose)
Cistus ladanifer (Common Gum Rockrose)
Cistus × oblongifolius (Oblongifolius Rockrose)
Cistus × pulverulentus 'Sunset' (Sunset Rockrose)
Cistus × purpureus (Orchid Rockrose)

Clethra

Clethra alnifolia (Summersweet )
Clethra alnifolia 'Ruby Spice' (Ruby Spice Summersweet )

Coleogyne

Coleogyne ramosissima (Blackbrush)

Cornus

Cornus 'Eddies White Wonder' (Eddie's White Wonder Dogwood)
Cornus 'Porlock' (Porlock Dogwood)
Cornus Venus® (Venus Dogwood)
Cornus alba (Tatarian Dogwood )
Cornus alternifolia (Pagoda Dogwood)
Cornus amomum (Silky Dogwood)
Cornus canadensis (Bunchberry)
Cornus capitata (Evergreen Dogwood )
Cornus controversa (Giant Dogwood)
Cornus controversa 'June Snow' (June Snow Giant Dogwood)
Cornus drummondii (Rough-leaved Dogwood)
Cornus × elwinortonii Starlight® (Starlight Dogwood)
Cornus florida (Flowering Dogwood )
Cornus florida 'Golden Nugget' (Golden Nugget Dogwood)
Cornus florida 'Welchii' (Tricolor Dogwood )
Cornus kousa (Kousa Dogwood )
Cornus kousa 'Gold Star' (Gold Star Dogwood)
Cornus kousa 'Radiant Rose' (Radiant Rose Dogwood)
Cornus kousa Scarlet Fire® (Scarlet Fire Dogwood)
Cornus kousa 'Sunsplash' (Sunsplash Dogwood)
Cornus kousa 'Wolf Eyes' (Wolf Eyes Dogwood)
Cornus mas (Corneliancherry Dogwood)