The Happy Grower Hydroponics
Hydroponics & Indoor Growing in O'Fallon, Missouri
4.8 (127)
| Category | Hydroponics & Indoor Growing |
|---|---|
| Address | 322 Fort Zumwalt Square, O'Fallon, MO 63366 |
| Street | Fort Zumwalt Square |
| Area | O'Fallon, Missouri |
| Phone | (636) 294-4331 |
| Google rating | 4.8 (127) |
| Source | Google Maps and public records · listed Oct 16, 2026 |
Hours
| Monday | Closed |
|---|---|
| Tuesday | Closed |
| Wednesday | 10 am–6 pm |
| Thursday | 10 am–6 pm |
| Friday | 10 am–6 pm |
| Saturday | 10 am–5 pm |
| Sunday | 12–5 pm |
About The Happy Grower Hydroponics
Hydro and garden supply
Located at 322 Fort Zumwalt Square, O'Fallon, MO 63366, The Happy Grower Hydroponics operates as a hydroponics store serving O'Fallon in Missouri. This page gathers the practical details people usually look for before visiting: where it is, how to reach it, when it opens and how customers rate it.
The business lists hours on 5 days of the week. The most common schedule is 10 am–6 pm. Note that it does not open on Monday, Tuesday. As with most places, expect changes around holidays; the phone number below is the fastest way to confirm. You can reach The Happy Grower Hydroponics at (636) 294-4331; calling is usually the quickest way to ask about availability, prices or directions.
On Google it holds a rating of 4.8 out of 5 from 127 reviews.
How The Happy Grower Hydroponics compares with other hydroponics & indoor growing in O'Fallon
- Nearest other hydroponics & indoor growing: The Grow Room LLC (0.9 mi)
Before you buy
- Check your area's zone on the USDA Plant Hardiness Zone Map; plant tags list the coldest zone a plant survives.
- Ask whether plants were grown locally and what the nursery's guarantee covers.
Latest Google reviews
The 5 most recent reviews shown on Google Maps. Reviews belong to their authors; read all of them on Google.
Joshua Martin 3 months ago
My favorite shop. James is the best!
xyz xyz 4 months ago
Man’s got some great knowledge and very helpful. Keep the brick and mortar stores open.
Veronica 4 months ago
Went today with my husband and what an amazing experience this place was. The man helping us was so informational and so patient. He took his time and didn't make us feel like he was pushing sales. Great service. They've gained two lifetime customers after today!
Timegone Quick 8 months ago
We have been going to see James and his wife for years. Always extremely happy with everything we purchase from them. If your in need of some great genitics and advice, this would be your main source for it all. 6 Stars for certain.
Scott Evans a year ago
Awesome, friendly, knowledgeable customer service. James takes care of me every time I visit! I almost always hear other customers raving about how much they like this place compared to other shops they have visited and they now only use the Happy Grower. James also offers a military discount, which I greatly appreciate. Thanks for doing what you do James!!!
Frequently asked questions
Where is The Happy Grower Hydroponics located?
The Happy Grower Hydroponics is at 322 Fort Zumwalt Square, O'Fallon, MO 63366, in O'Fallon, Missouri. Use the “Open in Google Maps” button on this page for directions.
What kind of business is The Happy Grower Hydroponics?
The Happy Grower Hydroponics is listed as a hydroponics store.
What are the hours of The Happy Grower Hydroponics?
Published hours are Monday: Closed; Tuesday: Closed; Wednesday: 10 am–6 pm; Thursday: 10 am–6 pm; Friday: 10 am–6 pm; Saturday: 10 am–5 pm; Sunday: 12–5 pm. It is closed on Monday, Tuesday. Hours can change on holidays, so call before a special trip.
Is The Happy Grower Hydroponics open on Sunday?
Yes, on Sunday it is open 12–5 pm.
What is the phone number of The Happy Grower Hydroponics?
You can call The Happy Grower Hydroponics at (636) 294-4331.
How is The Happy Grower Hydroponics rated on Google?
The Happy Grower Hydroponics has a Google rating of 4.8 out of 5 from 127 reviews.
Are there other hydroponics & indoor growing near The Happy Grower Hydroponics?
Yes. O'Fallon also has The Grow Room LLC among others; see the full list of hydroponics & indoor growing in O'Fallon at the bottom of this page.
More hydroponics & indoor growing in O'Fallon
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The Grow Room LLC
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