Specializing in indoor gardening and hydroponics growing!
Growco Indoor Garden Supply opened for business in 1999
Growco Indoor Garden Supply has been supplying growers with the best quality organic fertilizers, hydroponics systems, and indoor gardening supplies since we opened our first retail store in 1999!
We now have two incredible retail stores in West Michigan, and a dedicated full-time warehouse for our internet customers. We stock all of the items that you'll find on this website at the lowest possible price, and we always ship orders out on same day we receive them or on the next business day! We specialize in complete growroom packages, and we will gladly take the time to help you build the growroom of your dreams! Large orders, pallets of soil- whatever you need for your indoor garden- you've come to the right place, we're here to help!
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. Huge selection, low prices, and fast shipping- Growco wants to be your favorite grow shop! Let us help you learn to grow like a pro!
Private, secure online ordering. No registration needed to order. Satisfaction is guaranteed!
What's new at Growco Indoor Garden Supply?
- Sunleaves pH Essential Digital Pen
- Bountea Fungal Activator - Delivers beneficial fungus
- Bountea Bioactivator - Give your compost tea a boost!
- Monterey B.t. Concentrate - Safe for people and pets!
- Nutrilife H2O2 - Garden Strength - It's back!
- Titan Controls CO2 Generators - LP & NG
- Organic Bountea SuperStart - Enhance your roots
- Blueprint CO2 Generator - Adjustable output!
- Bluelab Probe Care Kit - New Version!
- The Other Tomato - New Nutrients!
- New 2014 Organic Seed Selection!
- Big Bloomin' Guano - Increase fruit and flower size
- Earth Juice BioZeus - Establish healthy roots!
- Sun System Dominator XXXL 8"
- Sun System Dominator XXXL 6"
- Super Sprouter Digital Heat Mat Thermostat
- Titan Controls Kronus 2 - Temp/Hum/CO2 Controller
- Titan Controls Atlas 4 - 5000 PPM CO2 Control!
- Titan Controls Atlas 2 - CO2 control at 1500 PPM
- Blueprint Digital Atmosphere Controller - BDAC-2
- Sumatran Bat Guano - High quality!
- Excelerite - Remineralizer and Microorganism Multiplier
- Plant Success Jellyfish - Treat root cuttings!
- Sulfur Prills - New 2lb size
- 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!
- New Cyco Products - Nutrients and additives!
- AquaFarm - The Perfect Green Gift!
- 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!