| Company |
| C & K Jones Roses |
| C & O Nursery |
| C and D Plants |
| C and T Iris Patch |
| C und R Zollinger |
| C.S. Lockyer's (Fuchsias) |
| Caches Valley Growers |
| Cackle Hatchery |
| Cactaceas Mexicanas |
| Cacti.com |
| CactiMex (Plantas y Semillas Deserticas de Mexico) |
| Cactus Dean |
| Cactus Heaven |
| Cactus House |
| Cactus Joe's Blue Diamond Nursery |
| Cactus King |
| Cactus Limon |
| Cactus Museum |
| Cactus Store (Cactusstore.com) |
| Cactusland Direct |
| Cactuslands.com |
| Cactusshop - Westfield Cactus |
| Cadd's Beehive Iris Garden |
| Cal Cactus |
| Cal Dixie Iris Gardens |
| Cal Orchid |
| Cal Pacific Plant Farm, Inc. |
| Caladium Bulb Company |
| Caladium Bulbs 4 Less |
| Caladium World |
| Caladiums Florida |
| Caldwell Nursery |
| California Cactus Center (Cacti 101) |
| California Carnivores |
| California Daylilies |
| California Gardens |
| California Seed and Garden Company |
| California Tropical Fruit Tree Nursery |
| CalPlants |
| Calumet Earth Farm |
| Calwest Orchid Supplies |
| Calypso Orchid Company |
| Camano Dahlias |
| Cambridge Agricultural (CobraHead LLC) |
| Camdol Nurseries Ltd. |
| Camellia Forest Nursery |
| CamelliaShop.com (The Camellia Shop) |
| Cameron & Rhoda McMaster's African Bulbs |
| Cameron Family Farm |
| Camp Creek Native Plants |
| Campbell River Garden Center |
| Campberry Farm |
| Canada Green |
| Canada's Bamboo World |
| Canadahalia Gardens |
| Canadian Gardening |
| CanAmaze Volcanic Rock Powder |
| Cannabiz (Cannas by Bernard Yorke) |
| Canning Daylily Gardens |
| Canning Perennials |
| Canpelkni Blooms |
| Canterbury Creek (Westlake Daylilies) |
| Cants of Colchester |
| Canyon Creek Nursery |
| Canyon Ridge Daylily Farm |
| Cape Cod Compost |
| Cape Cod Violetry |
| Cape Cod Weathervane Company |
| Cape Cod Worm Farm |
| Cape Flora |
| Cape Iris Gardens |
| Cape Lavender |
| Cape Oasis |
| Cape Seed & Bulb |
| Capital Gardens |
| Caprilands Herb Farm |
| Captive Exotics |
| CareFree Garden Center |
| Carefree Gardener |
| Caribbean Garden Seed |
| Caribbean Seeds |
| Carino Nurseries |
| Carlson's Gardens |
| Carmela Orchids |
| Carncairn Daffodils Ltd. (Kate Reade) |
| Carnivero |
| Carnivorous Plant Nursery |
| Caro Desert Nursery |
| Carol Wright Gifts |
| Carole's Garden Clematis Nursery |
| Carolina Biological |
| Carolina Daylilies (Tom Bruce) |
| Carolina GARDENER |
| Carolina Gourds and Seeds |
| Carolina Native Nursery |
| Carolina Rustica |
| Carolino Palms |
| Carpenter's Tree Farm |
| Carter and Holmes Orchids |
| Carter's Cool Plants |
| Cartner Christmas Tree Farm |
| Casa de las Orquideas |
| Casa Rocca Daylilies |
| Cascade Bonsai Works |
| Cascade Bulb and Seed |
| Cascade Carnivores |
| Cascade Forestry Nursery |
| Cascade Sales |
| Cascadia Edible Plant Nursery |
| Casey's Heirloom Tomatoes of Airdrie |
| Casita Azul (ILoveHostas.net) |
| Cass Bonsai Gardens, LLC |
| Castle International Resources |
| Castlebury Daylilies (Pine Branch Daylily Garden) |
| Cat Orchids |
| Catalpa Ridge Farm |
| Catch A Drip LLC (catchadrip.com) |
| Catch-Fly |
| Cates Family Glads |
| Catfish Logic |
| Cathy's Crawly Composters |
| Catnip Acres Herb Nursery (Our Grandmother's Garden) |
| Catrina's Garden LLC |
| Cattail Creek Gardens |
| Cattail Gardens |
| Cavalier Daylily Gardens |
| Cavendish Perennials |
| Cayenne Arts Treasured Seeds |
| Cayeux, S.A. |
| Cayuga Garlic Farms |
| Cebe Farms |
| Cedar Creek Violets |
| Cedar Hollow Rose Farm |
| Cedar Knoll Farm Greenhouse |
| Cedar Ridge Dahlias |
| Cedar Ridge Farms |
| Cedar Ridge Gardens |
| Cedar Tree Gardens |
| Cedar-Built Greenhouses |
| Cedar-Sheds.com, a SpiritLiving Co. (Cedar Sheds.com) |
| CedarCide Industries |
| CedarStore.com |
| Cedarthorn Gardens |
| cedartrees.com (North Country Tree Nursery, Inc.) |
| CedarWorks Furniture |
| Cedera Seed Inc. |
| CEG Nursery |
| Celestial Bonsai |
| Celestial Gardens (J.D. Stadler) |
| Celtic Farm |
| Celtic Oaks Farm & Rabbitry |
| Center of the Webb |
| Central Coast Wilds |
| Central Florida Farms |
| Century Farm Orchards |
| Chadwick and Sons Orchids |
| Chailey Iris Garden |
| Chalybeate Gardens |
| Champion Acres Nursery |
| Champion Daylilies (Schumacher Farms, Inc.) |
| Charing House Gardens |
| Charles Alford Plants |
| Charles Applegate Garden |
| Charley's Farm |
| Charley's Greenhouse & Garden Supply |
| Charlie Haywood |
| Chateau CharMarron Peony Gardens |
| Chattanooga Daylilies |
| Chauly’s Favorite Seeds |
| Cheap Hydroponics |
| Cheap Seeds |
| Chehalem Creek Nursery |
| Chehalem Gardens |
| Chem Free Lawns Inc. |
| Chengerian's Tree Land |
| Cherish Farm Peonies |
| Cherished Memories Daylilies |
| Cherokee Gardens |
| Cherokee Water Gardens |
| Cherry Blossom Gardens |
| Cherry Creek Daffodils |
| Cherry Gal (CherryGal.com) |
| Cheryl Daylilies |
| Chesterfield Orchid Company (formerly Chesterfield Dahlia Farm) |
| Chestnut Hill Tree Farm |
| Chicagoland Gardening |
| Chief River Nursery |
| Chile Pepper Institute (New Mexico State University) |
| chileflora.com |
| Chillifire |
| Chilly Palm |
| Chiltern Seeds |
| China Gardening Nursery |
| Chocolate Flower Farm |
| ChocolateHabanero.com |
| Choice Bulb Farms |
| Choice Edibles |
| Chris Bowers & Sons Whispering Trees Nurseries |
| Chris' Topiary Nursery |
| Christianne |
| Christie Farms |
| Christie's Daylilies (dixondelights.com) |
| Christies Alpine Nursery |
| Christmas Country |
| Christmas Forest |
| Christmas Tree Bazaar |
| Christmas Tree Express (www.freshcutchristmastree.com) |
| Christmas Tree Land |
| Christmas Tree Ranch |
| Christmas Trees Worldwide |
| ChristmasFarms.com |
| ChristmasTreesNow.com (Windblown Tree Plantation) |
| Christopher Weeks Peppers |
| Chub Lake Tree Farm |
| Chuck Chapman Iris |
| Chuck Plemmons Perennials |
| Chula Orchid Supplies |
| Chumley Cycads |
| Cider Hill Nursery |
| Cider House Hostas |
| Cindy's Louisiana Iris |
| Circle Dance Seeds |
| Circle G Farms and Nursery |
| Circle H Growers |
| Circlehoe® |
| Cistus Nursery |
| Citrus Trees Online |
| Clack's Dahlia Patch |
| Clackamas Orchids Inc. |
| Claines Canna Collection |
| Claire Austin Hardy Plants |
| Clara's Garden |
| Clarington Forge |
| Clarke Koi Ponds |
| Classic Caladiums |
| Classic Groundcovers, Inc. |
| Classic Viburnums |
| Classy Groundcovers |
| Clause Jardin |
| Clay Trout Pottery |
| Clean Air Gardening Company |
| Clear Creek Seeds |
| Clear Mountain Garden Treasures |
| Clear Ridge Nursery |
| Clearly Pretty |
| Clearview Dahlias |
| Clearview Hatchery |
| Clearwater Landscapes |
| Clematis by Mail |
| Clematis Choice |
| Clematis Westphal |
| clematis.com |
| Clement Daylilies |
| Cliff Finch's Zoo (topiaryzoo.com) |
| Clifford's Perennials & Vine |
| Clifton Park Turf Supplies |
| Clifton Seed Company |
| Climbing Plants Direct |
| ClimbingRoses.com (formerly Hardy Roses) |
| Clint's Dandy Digger |
| Clive Simms Nut Trees & Unusual Fruit for the Edible Garden |
| Clivia Creations Nursery (Michael Morri) |
| Clivia USA |
| Clivias from SAflora |
| Cloud Jungle Epiphytes |
| Cloud Mountain Farm Nursery |
| Cloud's Orchids |
| Cloudy Valley Nursery |
| Clover Roads Organic Farm |
| Clyde Robin Seed Company |
| Clyde's Garden Planner |
| CM Gamebird Farm and Hatchery |
| CMS Gardens (Keengardener Ltd) |
| CN Seeds |
| Coast Gardens by Milliways Nursery |
| Coastal Gardens & Nursery |
| Coble Metal Works (dba Southeastern Architectural Metals) |
| Coburg Flower Depot |
| Cochato Nursery |
| Cockadoodle DOO (Pure Barnyard Inc.) |
| Cocker's Roses (James Cocker & Sons Rose Specialists) |
| Cockhill Apiary |
| Coconut Bowls Hawaii |
| Coe's Comfrey |
| Cofer's Home & Garden Showplace |
| Coger's Sugar House Gardens of Vermont |
| Coiner Nursery |
| Cold Hardy Cactus |
| Cold Hardy Plants |
| Cold Stream Farm |
| Collections Etc. |
| Collector Palms |
| Collector's Nursery |
| Collier's Garden |
| Colllins' Rainbow Garden |
| Colombian Orchids |
| Colonial Creek Farm |
| Color Garden |
| Colorado Gardener |
| Colorado Hardy Plants |
| Colorado Zoysia (also dba Zoysia Agricultural Research Station, formerly The Zoysia Place) |
| Colorblends (Schipper & Co. USA) |
| Colourful WaterWise Gardening Software |
| Colvos Creek Nursery |
| Colwood Dahlias |
| Comanche Acres Iris Garden |
| Comfrey Girl Wormfeed |
| Commonwealth Nurseries (ComNur) |
| Commonwealth Plants, LLC (auricula.com) |
| Comox Valley Growers & Seed Savers |
| Companion Plants |
| Completely Clematis Specialty Nursery |
| Compost Air (Beckner & Beckner) |
| Compost Mania |
| Compost Sak (Root Control, Inc.®) |
| Compost Solution |
| Compost-Bin.Com (PilePro) |
| CompostCritter.com (Reykur Associates) |
| Composter Connection |
| Composters.com (GREENCulture) |
| ComposTumbler (PBM Group) |
| Compostworms.com (Rivers Pacific Earthworms) |
| Comstock Seed |
| Comstock, Ferre & Co. |
| Con and Carol's Daylilies |
| Conant |
| Concepts LeCault Inc. |
| Concord Nurseries |
| Cone Trellis |
| Conifer Gardens Nursery |
| Conifer Kingdom |
| Conifers Garden |
| Conklin Tree Farms |
| Conley's Garden Center |
| Connor Bamboo |
| Cono's Paradise |
| Conservation Seed |
| Conservation Seeding & Restoration, Inc. |
| Contagious Cacti |
| Container Dahlias |
| ContainerSeeds.com |
| Contech Electronics |
| Contrary Mary's Plants & Designs |
| Control Wizard Products |
| Conway's Clivias |
| Cook's Carnivorous Plants |
| Cooklane Dahlias (Dahlias Online) |
| Cool Garden Things |
| Cool Roses |
| Cooldaylilies.com (Bennett & Daughters Daylily Nursery) |
| Cooley's Strawberry Nursery |
| CoolGardenStuff.com |
| Cooltonagh Irish Sweet Peas |
| Coombland Nursery |
| Cooper Seeds |
| Copacabana Gardens Landscape |
| Copper Garden Art |
| Copper Kettle Garlic |
| Copperhead North |
| Corn Creek Greenhouse |
| Corn Hill Nursery |
| Cornerstone Garlic Farm |
| Corns (Carl Barnes) |
| Cornucopia Garden Seeds |
| Cornucopia Seeds and Plants |
| Corona Clipper |
| CoronaCactus Nursery, LLC |
| Corralitos Gardens |
| Correia Chestnut Farm |
| Costco Wholesale |
| Cotswold Garden Flowers |
| Cottage Farms |
| Cottage Garden Plants |
| Cottage Garden Seeds |
| Cottage Gardens |
| Cottage Trail Gardens |
| Cottage-in-the-Meadow Gardens: Amana Heritage Seed Bank |
| Cottontail Gardens |
| Country Boy Gardens |
| Country Care Roses |
| Country Casual |
| Country Cottage |
| Country Creek Acres |
| Country Delights Iris |
| Country Fields |
| Country Flower Garden |
| Country Garden |
| Country Garden Concepts |
| Country Garden Nursery |
| Country Gardens, Inc. |
| Country Green |
| Country Hatchery |
| Country Home Country Gardens |
| Country Home Products (also dba DR Chipper and DR Field and Brush Mower) |
| Country Lane Daylilies |
| Country Lane Gazebos |
| Country Lane Herbs & Dried Flowers |
| Country Livin' Creations |
| Country Road Enterprises |
| Country Road Plant Farm and Gift Shop |
| Country Store |
| Countryman Peony Farm |
| Countryside & Small Stock Journal |
| Countryside Orchids |
| Countryside Organics (formerly Countryside Natural Products) |
| Countryside Roses |
| Courtil du Jardin Nursery |
| Covered Bridge Organic, Inc. |
| Cowlitz River Dahlias |
| CowPots |
| Cox's Begonia World |
| Coyote Creek (formerly Cherokee Rose) |
| Crabgrass Alert Company |
| Crafty Gardener |
| Crafty Plants - UK Tillandsia Airplant Nursery |
| Cranberry Creations |
| Cranborne Manor Garden |
| Crape Myrtles Inc. (also dba Crape Myrtle Farms and Lagerstroemia.com) |
| Crazy Dahlia Lady |
| Creative Gardens |
| Creekside Dahlia Farm |
| Creekside Gardens |
| Crestview MGMT LLC dba Deer Fence USA |
| Cricket Hill Garden Peony Heaven |
| Crimson Sage Nursery |
| Crintonic Gardens |
| Critter Creations, LLC |
| Critter Creek Farm |
| Critter-Repellent.com |
| Critterfence Deer Grates |
| Critterfence.com |
| Crittergetter |
| Critz Farms |
| Crochet Daylily Garden |
| Crockett's Tropical Plants |
| Crocus.co.uk limited |
| CropKing |
| Crosman's Seeds |
| Cross Border Daylilies |
| Cross Country Nurseries (chileplants.com) |
| Cross View Gardens |
| Crossview Gardens |
| Croston Cactus (John L. Henshaw) |
| Crow Dog Native Ferns and Gardens |
| Crowders Online |
| Crown Asparagus |
| Crown Bees |
| Crownsville Nursery |
| Crug Farm Plants |
| Crystal Creek Pond Supply (formerly Pagoda Koi and Pond Supply, LLC) |
| CSI Hobby Greenhouses |
| csucculent.com (Carol Close) |
| CT Daylily |
| Cubit's Organics |
| Cucumber Shop |
| Culm View Nursery |
| Culshaws Redwoods |
| Cultivariable Seeds |
| Culver Farm Daylilies |
| Cummins Nursery |
| Cupkie's Christmas Village |
| Curry's Greenhouses |
| Custom Engraving Services |
| Custom Water Gardens |
| Cutler's Pheasant & Poultry Supply, Inc. |
| Cutting Edge Packaging Products |
| Cutting Edge Plants |
| Cyberlily Gardens |
| CyberNiche Software (Seed Program) |
| Cycad Gardens |
| Cycad International (Cycad Gardens Nursery) |
| Cycad Jungle |
| Cycad Seedling (CycadSeedling.com) |
| Cycads And Seeds |
| Cycads-n-Palms.com |
| Cyclone Rake (Woodland Power Products, Inc.) |
| Cymbidium Orchids in Australia |
| Cymbidium Tropical Plants |
| Cymron Cottage |
| Cynthia's Iris Garden |
| Cypripedium Haven |
