Green Thumb Hydro Co. is located in Denver, Colorado at 225 & Tamarac. Our company (and yeah, this site) was founded for the indoor gardener who values sound advice and complete discretion. Collectively our staff has over 30 years experience using what we sell. Let's face it, Hydroponics is where it's at for you, and for us!

We're growing rapidly, in fact were Colorado's fastest growing Hydroponics Supply company. At the end of the day there's one reason for that. It's not because we spend the most on advertising (have you checked the ads in WestWord lately?) It's not because we were the first kids on the block, so to speak. Simply put: it's because of repeat business. It's because of word of mouth. It's because when you make a purchase at our store or online at www.greenthumbhydroco.com we stand behind it. We don't wear a tie to work. Heck, some days we don't even wear socks. It's because we're gardeners. Just like you. Because we're gardeneres and not a bunch of pencil pushers sitting around conference room tables worried about turning a buck we care enough to stand behind what we sell. We understand that our advice impacts you. We take that very seriously here.

Should you ever need advice, or have questions, comments etc. please feel free to call and or email us. We're here to help ;) You can find our contact information on the Contact Us page.