Abelia

Abelia × grandiflora (Glossy Abelia)
Abelia × grandiflora 'Francis Mason' (Francis Mason Glossy Abelia)

Abeliophyllum

Abeliophyllum distichum (White Forsythia )

Adansonia

Adansonia digitata (Baobab)

Aesculus

Aesculus californica (California Buckeye )
Aesculus chinensis (Chinese Horsechestnut)
Aesculus glabra var. arguta (Texas Buckeye )
Aesculus hippocastanum (Horsechestnut)
Aesculus hippocastanum 'Baumannii' (Double Horsechestnut )
Aesculus parviflora (Bottlebrush Buckeye)

Aleurites

Aleurites moluccanus (Candelnut)
Aleurites rockinghamensis (Candelnut)

Alnus

Alnus alnobetula subsp. sinuata (Sitka Alder )

Amelanchier

Amelanchier alnifolia (Western Serviceberry )
Amelanchier alnifolia 'Regent' (Regent Serviceberry )
Amelanchier canadensis (Shadblow )
Amelanchier × grandiflora (Apple Serviceberry)
Amelanchier × grandiflora Autumn Brilliance® (Autumn Brilliance Serviceberry)
Amelanchier × grandiflora 'Forest Prince' (Forest Prince Serviceberry)
Amelanchier laevis (Allegheny Serviceberry )

Andromeda

Andromeda polifolia (Bog Rosemary)

Aralia

Aralia elata (Angelica Tree )

Arbutus

Arbutus menziesii (Pacific Madrone )
Arbutus unedo (Strawberry Tree )

Arctostaphylos

Arctostaphylos 'White Lanterns' (White Lanterns Manzanita)
Arctostaphylos andersonii (Santa Cruz Manzanita )
Arctostaphylos bakeri subsp. bakeri 'Louis Edmunds' (Louis Edmunds Manzanita)
Arctostaphylos canescens (Hoary Manzanita )
Arctostaphylos columbiana (Hairy Manzanita)
Arctostaphylos confertiflora (Santa Rosa Island Manzanita)
Arctostaphylos densiflora (Sonoma Manzanita )
Arctostaphylos densiflora 'Howard McMinn' (Howard McMinn Manzanita)
Arctostaphylos edmundsii (Little Sur Manzanita)
Arctostaphylos hookeri (Hooker's Manzanita )
Arctostaphylos hookeri subsp. franciscana (Franciscan Manzanita)
Arctostaphylos insularis (Island Manzanita)
Arctostaphylos manzanita 'St. Helena' (St. Helena Manzanita)
Arctostaphylos montaraensis (Montara Manzanita)
Arctostaphylos nevadensis (Pinemat Manzanita)
Arctostaphylos pajaroensis (Pajaro Manzanita)
Arctostaphylos pajaroensis 'Bretts Beauty' (Brett's Beauty Manzanita)
Arctostaphylos patula (Green Manzanita )
Arctostaphylos pumila (Sandmat Manzanita )
Arctostaphylos pungens (Ponitleaf Manzanita )
Arctostaphylos refugioensis (Refugio Manzanita)
Arctostaphylos rudis (Shag Bark Manzanita )
Arctostaphylos tomentosa (Wolly Manzanita )
Arctostaphylos uva-ursi (Kinnikinnik )
Arctostaphylos uva-ursi 'Massachusetts' (Massachusetts Kinnikinnik )
Arctostaphylos uva-ursi 'Point Reyes' (Point Reyes Kinnikinnik )
Arctostaphylos uva-ursi 'San Bruno Mountain' (San Bruno Mountain Kinnikinnik )
Arctostaphylos viridissima 'White Cloud' (White Cloud McMinn's Manzanita )

Aronia

Aronia arbutifolia (Red Chokeberry)
Aronia arbutifolia 'Brilliantissima' (Brilliant Red Chokeberry)
Aronia melanocarpa (Black Chokeberry)

Azadirachta

Azadirachta indica (Neem )

Baccharis

Baccharis pilularis (Coyote Bush )

Berberis

Berberis triacanthophora (Threespine Barberry )

Buddleia

Buddleia davidii (Butterfly Bush)

Callicarpa

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

Camellia

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

Carissa

Carissa macrocarpa (Natal Plum)

Carpenteria

Carpenteria californica (Bush Anemone)

Castanea

Castanea dentata (American Chestnut)
Castanea mollissima (Chinese Chestnut)
Castanea sativa (European Chestnut )

Catalpa

Catalpa bignonioides (Southern Catalpa )
Catalpa × erubescens 'Purpurea' (Purple Catalpa)
Catalpa speciosa (Northern Catalpa )

Ceanothus

Ceanothus cuneatus (Narrowleaf Buckbrush )
Ceanothus cuneatus var. rigidus 'Snowball' (Snowball Ceanothus)
Ceanothus integerrimus (Deer Brush)
Ceanothus sanguineus (Redstem Ceanothus )
Ceanothus velutinus (Snowbrush )

Cephalanthus

Cephalanthus occidentalis (Buttonbush )

Chaenomeles

Chaenomeles speciosa (Flowering Quince)

Chionanthus

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

Choisya

Choisya × dewitteana 'Aztec Pearl' (Aztec Pearl Choisya)
Choisya ternata (Mexican Orange)
Choisya ternata 'Sundance' (Sundance Mexican Orange )

Chrysolepis

Chrysolepis chrysophylla (Golden Chinkapin )

Cinnamomum

Cinnamomum camphora (Camphor Tree )

Cistus

Cistus 'Elma' (Elma Rockrose)
Cistus 'Snow Fire' (Snow Fire Rockrose)
Cistus × corbariensis (White Rockrose)
Cistus × dansereaui 'Decumbens' (Decumbens Rockrose)
Cistus × florentinus 'Fontfroide' (Fontfroide Rockrose)
Cistus ladanifer (Common Gum Rockrose)
Cistus × oblongifolius (Oblongifolius Rockrose)

Cladrastis

Cladrastis kentukea (American Yellowwood)

Clematis

Clematis (hybrid) (Hybrid Clematis)
Clematis armandii (Evergreen Clematis )
Clematis terniflora (Sweet Autumn Clematis, )
Clematis viticella (Italian Clematis)
Clematis viticella 'Huldine' (Huldine Italian Clematis )

Clethra

Clethra alnifolia (Summersweet )