| Company |
| A & D Nursery |
| A & P Orchids |
| A Bird's Home (Woodside Gardens) |
| A Cottage Garden |
| A Fleur d'Eau Inc. |
| A Flowers Nursery |
| A Garden for Everyone |
| A Garden of Distinction |
| A Gardener's Journal |
| A Gardener's Secrets (HapJac.com) |
| A Hillside Nursery |
| A La Carte Daylilies |
| A Muse in the Garden |
| A Nearly Native Nursery |
| A Perennials Galore Greenhouse |
| A Piece of Paradise Plumerias & Candle Co. |
| A Proper Garden |
| A Quality Plant |
| A Reverence For Roses Inc |
| A Rustic Garden |
| A SeedWise Company |
| A Thousand Flowers |
| A-1 Daylilies |
| A. P. Whaley Seed Company |
| A.C. Burke & Co. |
| A.D.G. Water Gardens |
| A.D.R. Bulbs |
| A.G. Ammon Nursery |
| A.M. Leonard's Gardeners Edge |
| A.S.A. Corp |
| A.W. Brown's |
| A1Hydro |
| AAA Ornamentals |
| AAA Quality Engravers |
| Aalsmeer Horticulture Export |
| AAOOB Foods |
| Aaron's Homestead Products |
| Aaron's Nursery |
| Aaron's Outdoors |
| Aaron's Rain Barrels (formerly New England Design) |
| Aaron's Rainwater Harvesting Systems |
| AB&D Orchids Inc. |
| Abacus Nurseries |
| Abbotsbury Sub Tropical Gardens |
| Abbott Organics |
| Abbott-Ipco Inc. |
| Abby Rose Gardens |
| ABC Orchids & Tropicals |
| ABC Tree Farms, LLC |
| ABCeeds |
| ABirdsWorld.com |
| Abloom Gardens |
| About the Garden |
| Abriachan Garden Nursery |
| ABSeeds |
| Absolutely Amish.com (Gardencraft LLC) |
| Absolutely Cactus |
| Absolutely Gourdgeous |
| Absolutely Wild, Inc. |
| AbsolutePonds.com |
| Absorbent Technologies Inc. |
| Abundant Acres |
| Abundant Daylilies |
| Abundant Earth |
| AC's Agape Plants |
| Accent Dahlias |
| Accent Iris Garden (Vincent Christopherson) |
| Accents for Home and Garden (Pepper's Greenhouse) |
| Accents in the Garden |
| Access Garden Products (div. of Access Irrigation Ltd.) |
| Access with Ease |
| AccuWeather's AccuMall |
| Acer Gardens |
| ACF Greenhouses (Aarons Creek Farms, Inc.) |
| Achla Designs |
| Acme Worm Farm |
| Acorus Restoration |
| Across the Garden Fence (acrossthegardenfence.com) |
| Active Mail Order |
| Acton Beauchamp Old Roses |
| Ad Hoc Plants |
| Adamgrove |
| Adams All Natural Cedar |
| Adams County Nursery |
| Adams, Marshall |
| Adaptive Seeds LLC |
| ADBLPS |
| Adelman Peony Gardens |
| Adena Hems |
| Adenium Store |
| AdeniumRose Company |
| AdeniumSeeds.com |
| Adeniumshop.com |
| Adirondack Chair by Don Morse |
| Adirondack Company Limited |
| Adirondack Outdoors |
| Adirondack Wood Furnishings |
| AdirondackChairs.com |
| Adonai Garden Decor |
| Adopt An Orchid |
| Advanced Greenhouse Manufacturing Ltd. |
| Advanced Nutrients |
| Advanced Soil Science - ZeoPro |
| Advanced Tree Technology |
| AdvanceGreenhouses.com |
| Advantage Forestry |
| Adventures in Herbs |
| Aeolian Enterprises, Inc. |
| AeroFalls™ |
| AeroGrow International, Inc. (home of AeroGarden) |
| AFresh Christmas Tree Company |
| African Bulbs |
| African Succulents |
| African Violet Pots by Jim and Martha Davis |
| African Violet Pots by Robnzak.com |
| African Violets by Florals of Fredericks |
| After Hours Iris Patch |
| AG Organics (aka Avant Garden Organics Inc.) |
| agardenboutique.com (by Pathways to Perennials) |
| aGardenPlace.com |
| Agave Nursery |
| Agel Rosen- und Pflanzenvertrieb UG |
| Agency for Agricultural Information and Innovation |
| Agrestal Organic Heritage Seed Company |
| Agri Supply Company (Agri Direct Inc.) |
| Agrich, Inc. |
| Agriculture Solutions LLC |
| Agriframes |
| Agroforestry Research Trust |
| AgroHaitai Ltd. |
| Agrowtek |
| AGT Hydroponics (Advanced Gardening Techniques) |
| Agua Fria Nursery |
| AguaFina Gardens & Imports |
| Agway Seed |
| AHA WoodWorks, Inc. |
| Aina Hawaiian Tropical Products |
| Air Expose |
| Air Plant City |
| Air Plant Greenhouse |
| Air Plant Hub |
| Airplants4U |
| Aitken's Salmon Creek Garden |
| Akatsuka Orchid Gardens |
| Akène, culture forestière |
| Akerne Orchids |
| AKME Gardens |
| Al's Orchid Greenhouse |
| Alabama GARDENER |
| Alan C. Salzman, Orchids |
| Albert C. Faggard |
| Albert Lea Seed House |
| Alberta Nurseries and Seeds, Ltd. |
| Albright Seed Company |
| Albuquerque Hydroponics & Lighting (AHL) |
| Alchemy Works Seeds & Herbs |
| Alcovy Daylily Farm |
| Alder View Natives |
| Aldrich Tree Farm |
| Aleya's Garden |
| Alfagreen Supreme |
| alfresco |
| Algoflash |
| Alison's Garden |
| All Decked Out |
| All Go Wild (AllGowild.com) |
| All Good Things Organic Seeds |
| All Green Thumbs |
| All Greenhouses (div. of CSN Stores, Inc.) |
| All Seasons Garden Shop |
| All Seasons Gardening & Brewing Supply |
| All Seasons Homestead Helpers, Inc. |
| All Things Cedar |
| All Things Organic |
| AllDaylilies.com (Garfield Gardens) |
| Alleman Glads (John Alleman) |
| Allen Native Ventures |
| Allen, Sterling & Lothrop |
| Alligator Alley/Amazing Gardens |
| Allison's Christmas Trees |
| AllSeasonSeeds |
| Allwoods |
| Alma Gardens |
| Almaville Bamboo Company (abcbamboo.com) |
| Almost Eden Plants |
| Aloes In Wonderland |
| Aloha Hoyas |
| Aloha Orchid Nursery |
| Aloha Orchids |
| Aloha Seed & Herb |
| Aloha Tropicals |
| Alohilani Orchids |
| Alpen Gardens |
| Alpha Garlic Farms |
| Alpine Gardens |
| Alpine Gardens (AlpineGarden.com) |
| Alpine Trough |
| Alpine WildSeed |
| Alplains |
| Alternative Garden Supply, Inc. |
| Alternative Pond and Gardens Mart, Inc. |
| AlterNative Solutions |
| Always Summer Herbs |
| Alyssa's Garden |
| AM Orchids |
| Amador Flower Farm |
| Amanda's Garden |
| Amaranth Stoneware Ltd. |
| Amaryllis Bulb Company |
| Amaryllis Plus |
| Amateur Gardening |
| Amazing Butterflies |
| Amazonia |
| Amber Waves Gardens |
| Amber's Organics (gardenofcures.com) |
| Amberg's Nursery Inc. |
| Ambergate Gardens |
| Amberway Gardens |
| Ambrose Worm Products |
| Amenity Plant Products |
| American Agriculture |
| American Daylily & Perennials |
| American Forestry Technology, Inc. |
| American Forests Historic Tree Nursery |
| American Gardener |
| American Greenhouse Kit Company |
| American Greenhouses (HostaGardens Of Burr Ridge) |
| American Meadows |
| American Native Nursery |
| American Native Plants |
| American Natural Products |
| American Nettings & Fabric Inc. |
| American Nurseryman |
| American Ornamental Perennials |
| American Pillar Nursery |
| American Seed Company |
| AmeriMark |
| Amethyst Hill Nursery (formerly Bell Family Nursery) |
| Amish Country Craftworks |
| Amish Gourds |
| Amishland Heirloom Seeds |
| AmkhaSeed |
| AmPac Biotech |
| Ampac Seed Company |
| Amulree Exotics (Turn-it-Tropical.co.uk) |
| Ancient Dragon Bonsai |
| Ancient Graffiti |
| Anderson-Alford Daylily Garden |
| Anderson's Seed Co. |
| Andiris Gardens |
| Andre Farms Daylilies |
| André Viette Farm & Nursery |
| Andria's Greenhouse Inc. |
| Andy's Aquatic Plant List |
| Andy's Asparagus |
| Andy's Orchids |
| Angel Gardens Inc. |
| Angel's Garden of Eden |
| Angelgrove Tree Seed Company |
| Angelique Roses |
| Angelwood Nursery |
| Angie's Garden |
| ANi Direct Seeds |
| Anna Anna Seed Company |
| Annette's Orchids |
| Annie Appleseed |
| Annie's Clay Pot Garden (Annie's Bag of Bones™) |
| Annie's Heirloom Seeds |
| Annie's Magic Garden |
| Annual Flower Store (A Spring Hill Nursery Store) |
| AnTec Laboratory & Ladyslipper Farm |
| Antioch Daylily Garden |
| Antique Rose Emporium |
| Anything That Blooms, Inc. |
| AnythingGreen.com |
| Apartment Gardening Products |
| Apex Bamboo |
| Apothecary Rose Shed |
| Appalachian Bamboo |
| Appalachian Evergreens |
| Appalachian Nurseries |
| Appalachian Seeds |
| Appalachian Wildflower Nursery |
| APPELSPADE |
| Apple Art Espalier |
| Apple Court |
| Apple Luscious Organic Orchards |
| Applesource |
| Applewood Seed Company |
| APS Pond Supply |
| Apuldram Roses |
| AQ Orchids |
| Aqua Art Pond Specialists |
| Aqua Botanic |
| Aqua Mart Inc. |
| Aquarium Plants (Aquariumplants.com) |
| Aquarius Water Gardens |
| Aquatic Eco-Systems, Inc. |
| Aquatic Farm and Perennials |
| Aquatic Plant Depot |
| Aquatic Plants of Florida |
| Aquatic Ponds |
| Aquatic Scapes (FreshwaterAquariumPlants.com) |
| Aquatic-Store.com |
| AquaVor |
| Aquilegia Seed |
| ARBICO Organics |
| Arbor and Vine, LLC |
| arboreta (Charlton McMillan Limited) |
| ArborGen, LLC |
| Arbornaut Nursery |
| Arborsmith Studios |
| Arbour Environmental Shoppe |
| Arcadia Glasshouse |
| Arcadian Daylilies |
| Archie's Island Furniture (Outdoor Modern, Inc.) |
| Archway Daylily Gardens |
| Aren't I Pretty Daylilies |
| Argham Village Water Gardens |
| Arghya Gardens |
| Argyle Acres |
| Arid Lands Greenhouses |
| Arid Solutions Inc. |
| Arid Zone Trees |
| Arium Botanicals |
| Arizona Aquatic Gardens |
| Arizona Cactus Garden |
| Arizona Cactus Sales |
| Arizona Wholesale Growers |
| Arkansas Berry & Plant Farm |
| Arkansas Cave Worms |
| Arkansas GARDENER |
| Arkansas Pheasantry |
| Arkansas Valley Seed |
| Arlene's Legacy (Caproz Dahlias) |
| Armstrong Crickets |
| Armstrong Nursery (Armstrong Garden Centers) |
| Arne Herbs (Limeburn Nurseries) |
| Aroidia Research |
| Arrow Seed Co., Inc |
| Arrowhead Alpines |
| Arrowhead Dahlias |
| Art Gallery Gardens |
| Art's Nursery |
| Artemis Gardens |
| Artesian Designs |
| Artesian Greenhouses |
| Artful Earth |
| ArthritisSupplies.com (The Wright Stuff) |
| Artie Gardner |
| Artificial Rocks Factory |
| Artisan Gift Shop |
| Artisan Seeds |
| Artistic Gardener Nursery and Design |
| Artistic Plants Bonsai |
| Asack & Son Tree Farms |
| Asheville Agricultural Systems |
| Ashridge Trees Ltd. |
| Ashton Glen Perennial Nursery |
| Ashwood Garden Daylilies |
| Ashwood Nurseries |
| Asian Seed |
| Asiatic Green |
| Asklepios-seeds.com - Medicinal- & Ethnobotanical seeds |
| Asparagus Gardener |
| Association Kokopelli |
| Aston-Simms (Capability Simms, LLC) |
| Asuka Orchids |
| Ater Daylilies |
| Athelas Tropical Plants |
| Athens Seed, Lawn and Garden, Inc. |
| Atlantic Avenue Orchid and Garden Center |
| Atlantic Hydroponics & Greenhouses Inc. |
| Atlantis Hydroponics |
| Atlas Greenhouse Systems, Inc. |
| Atulya Enterprises |
| Au Jardin de Jean-Pierre |
| Aubuchon Hardware |
| Auburn Software Company (Garden Tracks) |
| Auckland Heirloom Seed Savers Network |
| Aucoin's Shantih Daylily Gardens |
| Audubon Magazine (National Audubon Society) |
| Audubon Nature Store |
| Audubon Workshop |
| Augis' Bulbs |
| August's Harvest |
| Aulden Farm |
| Aunt Martha's Garden Heirloom Seed Company |
| Aunt Molly's Barrel Products |
| Aurora Biodynamic Farm |
| Aussie Gold Orchid Mix (Van-Rolen Company) |
| Austin Creek Orchids |
| Austral Watergardens |
| Australian Gardener |
| Australian Native Plants Nursery |
| Australian Orchid Nursery |
| Australiana Plants & Seeds |
| Australiaplants.com (Windmill Outback Nursery) |
| Austri Seed2plants Gardens |
| Authentic Garden Greenhouses |
| Authentic Haven Brand Natural Brew |
| Autopot Systems (Gardenworld) |
| Autumn's Folly Farm |
| Avalon Acres Hostas and More |
| Avalon Garden.com |
| Avalon Gardens Seeds |
| Avalonia Daylilies |
| Avant Garden Decor |
| Avant Gardens |
| Avant-Gardening: Creative Organic Gardening |
| Avenger Organics |
| Avon Aquatics |
| Avon Bulbs |
| Avon Street Daylilies (Marie Stuart) |
| AVPlanters.com (The Planter Depot) |
| AwesomeTools.com |
| Ayers Family Koi Farm |
| Ayers Rainbow of Dahlias |
| AZ Ponds & Supplies, Inc. (Al Zimmer's Ponds & Supplies) |
| Azalea House Flowering Shrub Farm |
| Azalea Trace |
| Azienda Agricola Nardotto Capello |
| Aztec Dahlias |
| Aztekakti Seeds |
