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?
- 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!
- Grow More Hawaiian Bud - Micronutrient absorption
- Grower's Edge Drying Rack - Includes clips!
- Botanicare Vitamino - Effective B Vitamin Supplement
- Flora Nectar Grape & Sugar Cane - New Flavors!
- Rocket Plasma - Less heat, less power, better results!
- Measure Master Bucket - 5 gallon, various measurements
- Bluelab pH Probe KCl Storage Solution
- B'Cuzz Soil Micro Kit - Affordable starter pack!!!
- Sea Green Hydro - Designed for hydroponic systems
- Rockwool Formula One - Includes both A & B mixes
- Jiffy-7 Peat Pellet - case of 240!!!
- 600W Eye Hortilux Blue - natural sunlight MH blub
- Bushido Stash - organic dry supplement
- Hanna Calibration Solutions - accurate single-use packs
- Uprising Grow and Bloom - new 9 lb size!
- Air Force Pro Linear Air Pumps - oil-less compressor!
- Garden Culture Magazine - Expert advice for gardening!
- BIOWAVE Mini - Naturally increase yields by at least 12%
- Lumatek Digital Ballast Dual Air Cooled - 1000W
- New Final Flush Flavors - Grapefruit & Green Apple
- Hyper Fan - Efficient and quiet 6", 8", and 10" options
- Heavy 16 Foliar - Full spectrum protective spray
- Heavy 16 Fire - Versatile P/K booster
- Growstone Gnat Nix - Non-toxic fungus gnat control
- Blueprint Digital Atmosphere Controller BDAC-1
- Blueprint Mechanical Timer - 48 adjustable intervals!
- Blueprint CO2 Regulator BCR-1 - from 0-15 cu ft/hr
- Potter's Gold Premium Potting Soil
- Method Seven Resistance Plus - Advanced protection
- Method Seven Resistance - Protective eyewear
- Method Seven Operator Plus - Eyewear for HPS or MH
- Method Seven Clip-On - Protection on existing eyewear
- Kitchen Fruit Fly Trap - Effective and safe
- Botanicare pH Adjusters - Highly concentrated!
- Exact-Cap Measuring Kit - Accurate and convenient
- Samsung MAX Mini-Split AC 12,000 BTU 18 SEER
- 1000W HPS Bundle - With double-ended lamp!
- Eye Hortilux Lamps - All sizes we carry on sale!
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!