Specializing in indoor gardening and hydroponics growing!

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Satisfaction Guaranteed

Growco Indoor Garden Supply opened for business in 1999
Large Orders 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?

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

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Garden Watchdog Top 5
Organic Seeds in stock
Hydro for Hunger participant
OMRI Listed

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!

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