a
- Active Air
- Active Aqua
- Active Eye
- Aeromixer
- Age Old Nutrients
- Agrobrite
- Agrosun
- Air King
- Air-Pot
- AiroClean420
- Alchemist
- American Hydroponics
- Anden
- Aptus
- ARS
- Atami
- Atmosphere
- Aurora Innovations
- Aurora Peat Products
- Autopilot
- AXEON
- Azapro
b
- Big Foot Mycorrhizae
- Big Time Hydroponics
- Bio Green Clean
- BioAg
- BioBizz
- BioSafe
- Black Gold
- Bloom Brothers/Hydro Halo
- Botanicare
- Boveda
- Butter Brewer
- BVV
c
- California Lightworks
- Can Fan
- CAN-A-WIPES
- CannaBrush
- Central Coast Garden Products
- Centurion Pro
- CenturionPro
- Char Coir
- Chemboys
- Chikamasa
- Clonex
- Current Culture
- Cutting Edge Solutions
- CVault
- CYCO
d
↑ Tope
↑ Topf
↑ Topg
- Gaia Green
- Galcon
- Gamma2
- Garden HighPro
- Gardena
- Gavita
- General Hydroponics
- Genesis
- GEOLITE
- GREE
- Greenbroz
- GreenGro
- Gro Pro
- Gro Vision
- Grodan
- GroStar
- Grotek
- Grow More
- GROW!T
- Grower's Choice
- Growers Edge
- Growth Science
h
- H.D. Hudson Manufacturing Company
- Harvest Keeper
- Harvest More
- HarvestRight
- HEAVY 16
- HM Digital
- HM Digital Meters
- Hormex
- House & Garden
- Humboldt County's Own/Emerald Triangle
- Humboldt Nutrients
- Hydro Dynamics
- Hydro Flow
- Hydro Organics / Earth Juice
- Hydro-Logic
- Hydrodynamics International
- Hydrofarm
- Hydrologic
- Hydropolis Grow Tents
- Hygrozyme
i
- Ideal Air
- IHORT
- Iluminar
- Integra Boost
- Intelligent Growing Systems (Plug & Grow )
- International Enviroguard
- Iponic
j
↑ Topk
↑ Topl
↑ Topm
- Mad Farmer
- Marrone Bio
- Marrone Bio Innovations
- Micro-TES
- Microbe Life Hydroponics
- Milwaukee Instruments
- Miscellaneous
- Mondi
- Monterey
- Monterey Lawn & Garden Products
- Mother Earth
n
↑ Topo
↑ Topp
- P3 International
- Pacific Substrates
- Pargro
- Phantom
- PHANTOM Cultivar
- Phat
- PhotoBio
- Physan 20
- Plant Growth Technologies
- Plant Success
- Plant Success/Great White
- Precipitator
- Premier Horticulture
- Primordial Solutions
- Private Reserve
- Pro Cal
- PRO-MIX
- Procidic2
- PureCrop1
q
↑ Topr
- Raindrip
- Rainmaker
- Rare Dankness Nutrients
- Remo Nutrients
- Revelry Supply
- Rhizoflora
- Rock Nutrients
- Rogue Soil
- Root Pouch
- Roots Organics
- Royal Gold
s
- Schaefer
- Schaefer Fans
- Seabright
- Seabright Laboratories
- Shear Perfection
- Sierra Natural Science
- Smart Pot
- Soul
- South Cascade Organics
- Spray-N-Grow
- Staal Plast
- STACK!T
- Sun Hut
- SunBlaster
- Sungro/Sunshine Advanced
- Super Bat/Budswel
- Super Sprouter
- SuperThrive
- Supreme Growers
t
- T.O. Plastics
- Tarpline USA
- TechnaFlora
- Terpinator/Rhizoflora
- The Amazing Doctor Zymes
- The Green Pad
- Titan Controls
- TNB Naturals
- Trim Fast by Hydrofarm
- Trimbag
- Triminator
- TrimPro
- True Liberty Bags