Commercial-grade structure
A 2" x 2" galvanized steel frame with pre-welded stanchions and 8 mm twin-wall polycarbonate, the same specs used in commercial greenhouses.


The Thoreau Educational Greenhouse Package is designed for schools with horticulture programs, correctional institutions, and serious gardeners for both growing and therapeutic reasons. The 2” x 2” galvanized steel frame with pre-welded stanchions and Commercial graded 8mm twin wall corrugated covering (walls and roof) are the same specifications used in commercial products in the market today. The walls and roof are warranteed for 10 years and have a 15-20 year life expectancy.
The Thoreau Greenhouse is named after the great naturalist and agriculturalist Henry David Thoreau. The walls of the Thoreau are 6 ft. tall with a center peak of 9.5 ft. for optimal air circulation.
The design of Educational greenhouses requires attention to details that are different from that of hobby or commercial greenhouses. The design differences include the ability to accommodate large numbers of people (students) and allow them to become a part of the growing process, secure environment that can be locked when not in use, built to last construction that will provide many years of use, all within a climate controlled environment that is thermostatically controlled.
Our factory is a leader in providing functional, affordable greenhouses to schools and universities. Our educational line of greenhouses has been refined over the years and our offering is the most comprehensive in the market today. We have designed our Greenhouses as complete package that include all the accessories that a School, institution, or serious gardener would need.
The Snow Load on this RSI Educational Greenhouse is standard at 10 lbs/ sqft. The wind load is designed for 90 mph. The Educational Greenhouses are customizable and can be made to meet any local ordinances required to gain permitting. This is the responsibility of the purchaser to notify your retailer as to the requirements PRIOR to ordering as there might be additional costs associated if local requirements vary. Signed and sealed drawings are included in the cost of the greenhouse. They are based on your local municipalities requirements and will need to be supplied and confirmed by the purchaser. Riverstone is not responsible for building a greenhouse that does not meet local ordinances from the building department. Please reach out to Riverstone with any questions. All our Educational Greenhouses come with a full assembly manual and our team is here to walk you through all steps of in the construction process as needed.
Proudly made in the USAIn addition to all the previous features, the Growers Edition upgrade includes the following:
🌳 Unique and Upgraded 8mm twill wall polycarbonate with the light diffusing feature. This allows more light to be captured and used in the growing process, saving energy needed for a lighting system. A lighting system will still be required for certain crops that require up to 18 hours of light a day.

Our line is comprehensive in nature. We offer our customers the ability to choose from 10 sizes and designs for your specific needs. We understand the process and have simplified it for the consumer in complete package format at a budget price for a quality greenhouse.
THIS GREENHOUSE IS COMMERCIAL IN NATURE THAT IS DELIVERED ON A COMMERCIAL TRUCK AND WILL NEED TO BE UNLOADED AND ASSEMBLED BY PROFESSIONALS. THIS IS NOT A DIY PROJECT GREENHOUSE. THE GREENHOUSE REQUIRES A WATER LINE AND ELECTRICAL LINE TO FUNCTION CORRECTLY. THERE ARE NO RETURNS ON THIS PRODUCT ONCE ORDERED. PLEASE CALL US TO ANSWER ALL YOU QUESTIONS PRIOR TO YOUR PURCHASE AND WATCH OUR FEATURES VIDEO THAT GOES THROUGH THE FEATURES OF THIS GREENHOUSE.
Riverstone Ind. (RSI) · Hobby Greenhouse
Why customers choose it
A 2" x 2" galvanized steel frame with pre-welded stanchions and 8 mm twin-wall polycarbonate, the same specs used in commercial greenhouses.
The 42" x 84" ADA French glass security steel door has a lockset, so the greenhouse can be locked when not in use.
A two-stage commercial thermostat runs the exhaust fan and two 24" motorized shutters, and a 240-volt electric heater keeps it warm.
Two commercial work benches, 3' deep x 18' long, attach to the frame.
An automatic, programmable watering system with timer and an 18' x 20' 63% shade cloth come with the package.
Stamped and sealed drawings are included, and the greenhouse can be customized to meet local ordinances.
The details
| Floor area | 216 sq ft (12' x 18') |
|---|---|
| Exterior size | 12' W x 18' D x 9.5' H at the peak |
| Walking height | 6' at the side walls, 9.5' at the peak |
| Weight | 1,607 lbs |
| Frame | 2" x 2" galvanized steel with pre-welded stanchions and galvanized base rail |
|---|---|
| Glazing | 8 mm twin-wall corrugated polycarbonate on end walls, side walls and roof |
| Snow load | 10 lbs/sq ft (standard) |
| Wind load | 90 mph |
| Color | Metallic |
| Made in | USA, by Riverstone Industries |
| Door | One French glass security steel entry door, 42" W x 84" H, ADA, 3/4" thick, with lockset |
|---|---|
| Vents | Two 24" motorized shutters |
| Exhaust fan | One Quietaire 18" industrial exhaust fan |
| Thermostat | Two-stage commercial thermostat controls the fan and shutters |
| Heater | 240-volt electric heater with built-in thermostat |
| Benches | Two commercial work benches, 3' deep x 18' long, attached to the frame |
|---|---|
| Shade cloth | 18' x 20', 63%, with tie-down rope |
| Watering | Automatic, programmable watering system with timer |
| Installation | Delivered by commercial truck; professional unloading and assembly required |
|---|---|
| Utilities | Requires a water line and an electrical line |
| Drawings | Stamped and sealed drawings included |
| Warranty | 10 years on walls and roof (15 to 20 year life expectancy) |
Find the right fit
| Model | Floor area | Exterior size | Walking height | Door | Price from | Link |
|---|---|---|---|---|---|---|
Riverstone Industries 12ft x 18ft Thoreau Educational Greenhouse kit
Viewing | 216 sq ft (12' x 18') | 12' W x 18' D x 9.5' H at the peak | 6' at the side walls, 9.5' at the peak | One French glass security steel entry door, 42" W x 84" H, ADA, 3/4" thick, with lockset | $29,000 | |
Riverstone Industries 12ft x 24ft Thoreau Educational Greenhouse kit
| 288 sq ft (12' x 24') | 12' W x 24' D x 9.5' H at the peak | 6' at the side walls, 9.5' at the peak | One French glass security steel entry door, 42" W x 84" H, ADA, 3/4" thick, with lockset | $34,000 | View |
Free curbside freight delivery
Choose your size, color and options. Your greenhouse ships from the manufacturer's warehouse, packed for freight.
We'll contact you to set up a delivery time frame that works for you.
Delivery is by LTL motor freight on an 18-wheeler. Let us know about tight roads or low wires so we can plan ahead.
Someone needs to be there to receive the delivery. The driver does most of the work but may need a hand.
Foundations and bases are bulky, so we recommend ordering them together with your greenhouse to avoid a separate freight charge.
Good to know
Can't find your answer? Our greenhouse specialists are happy to help you choose.
678-408-8222 Email usYes. Shipping is free. Locations with limited access, such as islands, are rare exceptions that may carry an extra fee, and we'll tell you before anything ships.
Yes. If you find the same greenhouse for less from an authorized dealer, call or email us with the offer and we'll review it.
Yes. Mulberry Greenhouses is an authorized retailer, so your greenhouse is covered by the full manufacturer warranty.