Specializing in indoor gardening and hydroponics growing!
Growco Indoor Garden Supply opened for business in 1999
We handle large orders and we've been supplying both hobbyist and professional gardeners with quality merchandise through our retail stores and website ever since. We supply you with the best products that the industry has to offer, at a competitive price. Learn more here
We spare no expense in our shipping
department to see that your order will reach you in perfect condition - satisfaction and privacy guaranteed! We warehouse all of our products, and pride ourselves in getting your order to you fast!
Our staff has many years of hands-on experience
helping customers build grow rooms, dial in nutrient programs, and make seriously productive gardens. Feel free to give us a call with any questions you may have, we're here to help you.
Private, secure online ordering. No registration needed to order. Satisfaction is guaranteed!
What's new at Growco Indoor Garden Supply?
- Sun Winch Motorized Lift System
- Blueprint Digital CO2 Controller BDCC-1
- Blueprint CO2 Controller BCC-1
- Blueprint Mechanical Timer 120V BMT-2
- Wind King 12" - Industrial floor fan
- Ultimate Plant Wash - Clear application!
- Earth Juice OilyCann - Natural Supplement
- Ebb & Gro Hydro System - Complete system!
- Grow Flow Controller Unit - Expand your system
- Grow Flow Expansion Kit - 6 additional buckets
- 2014 Seeds are now in stock!
- Gorilla Grow Tent 4' x 8' - Durable and Adjustable
- Gorilla Grow Tent 3' x 3' - New Size!
- Humboldt's Own G-10 - Gravity Replacement
- Garden Culture Magazine - 2nd Issue Available!
- Adjust-a-Wing DE Reflector - Great heat dissipation!
- Adjust-A-Wings Large Double Ended Socket Kit
- Blueprint HID Hubs - 240v, 4 and 8 sites!
- Blueprint BTC-1 - Day/Night Temp Controller
- GoGreen Garden Hose Water Filter - Economical!
- Botanicare Hydroguard is back!
- New Cyco Products - Nutrients and additives!
- Black LT Tray - Small form factor and durable!
- Stealth RO Membrane Element - 200 GPD
- AC/DE - 8" Double Ended Air-Cooled Reflector
- DigiMax Double Ended Lamp - No wire shadows!
- Flo-N-Gro 6 site - All-in-one hydroponics system!
- AquaFarm - The Perfect Green Gift!
- Shear Perfection Straight Blade - Long 3" blade
- Shear Perfection Curved Blade - Durable titanium!
- Roots Organics Surge - Features marine protein materials
- Titan Controls Apollo 11 Timer - 240 Volts!
- Eye Hortilux Lamps - All sizes we carry on sale!
- More New Stuff...
Retail store and Online since 1999!
on most orders totaling $250 or more when shipped to lower Continental USA!
Stop in and visit us at our retail stores and experience a true, full service grow shop in person! Growco Indoor Garden Supply has two locations filled with all of the products on our website for you to check out.
We've got a warm summer day waiting for you all year-round at our Michigan Street location. Our attached greenhouse is filled with bonsai trees and running hydroponics systems for your viewing (and purchasing) pleasure.
Our new West River Drive location is crazy big, with a huge selection of indoor gardening products! Check out a running Volksgarden, or our new line of Current Culture hydroponics systems, both on display at the new shop. You'll also find the largest selection of nutrients in the state! It's located off 131 in Comstock Park, north of Grand Rapids. Easy on/off access, near the White Caps Stadium.
We welcome your visit, and promise you, it will be worth your time to make the trip! Maps to our stores
Why shop at 4hydroponics.com?
- FREE shipping on most orders $250 or more when delivered in lower Continental USA.
(Sorry, Alaska and Hawaii not included.) Oversized or heavyweight items not included.
- NO sales tax when delivery is outside of Michigan. In some states that's a 10% savings!
- VERY competitive pricing.
- No registration needed to place an order.
- When we ship your order, magazines or catalogs are liberally included. (More info)
- Read customer feedback here.
Shipping to Michigan? Expect delivery within 2 business days!