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Large Greenhouse Kit
Scale Up Your Production with a Professional Large Greenhouse Kit
Turn your hobby into a harvest. You reach a point where a few potted plants are not enough. Our Large Greenhouse Kit collection provides the square footage you need for serious food production. These structures range from 8x16 to 8x24, giving you massive volume for row cropping, propagation, and overwintering large perennials. You gain professional-grade environmental control in a permanent backyard structure.
Browse our selection of heavy-duty aluminum and hand-crafted wooden models below. These kits are engineered to withstand severe weather while providing ample room to work comfortably.
Maximize Yields with an Aluminum Large Greenhouse Kit
Best For: Commercial-grade production, extreme weather, and modular expansion (8x16, 8x20, & 8x24 sizes).
Stop limiting your crop selection. The Riverstone MONT series uses US-grade extruded aluminum to create a rigid, permanent structure. Unlike lighter imports, this frame holds 24 lbs/sq. ft. of snow and withstands 65 mph winds. We offer these kits in expansive sizes like 8x16, 8x20, and 8x24 to accommodate substantial growing operations.
Why the MONT series handles high volume:
- Thermal Efficiency: 8mm twin-wall polycarbonate acts like a double-pane window. It stabilizes large internal air volumes against outside temperature fluctuations.
- Modular Growth: The design allows for 4ft extensions. You can start at 8x16 and expand to 8x20 or 8x24 as your needs increase.
- Broad Access: Double doors (4ft x 6ft) allow you to drive a tractor or large wheelbarrow directly into the central aisle.
Choose the right package for your weather:
- Standard Black Edition: The robust base model with automatic roof venting. Ideal for temperate zones.
- Mojave Edition (Hot Climates): Includes solar-powered ventilation to flush heat. Perfect for hot southern climates.
- MOHEAT Edition (Cold Climates): Features a propane heating system and high insulation. Essential for northern winters.
- Growers Edition (Maximize Harvests): Includes drip irrigation and light-diffusing panels. Best for commercial-style propagation.
Transform Your Landscape with a Wooden Large Greenhouse Kit
Best For: Vertical growing, rustic aesthetics, and high humidity crops (8x16 & 8x20 sizes).
Combine architectural beauty with agricultural function. The OverEZ large greenhouse kit features Amish craftsmanship using pressure-treated Southern Yellow Pine. This lumber resists rot and insects while blending naturally into your garden landscape. The design focuses on vertical space, making it distinct from standard metal arches.
- Utilize Vertical Space: The ceiling peaks at 115 inches. This height creates room for vining crops and hanging baskets without crowding the walkways.
- Control Humidity: The included exhaust fan with speed controller manages moisture levels in these larger air volumes effectively.
- Filter Sunlight: 8mm multi-wall polycarbonate blocks UV radiation while letting essential light reach the center of the structure.
- Available Footprints: We stock the spacious 8x16 and the massive 8x20 models.
All the Benefits of Owning a Large Greenhouse
- Provides enough square footage to grow a significant portion of your family's yearly vegetable intake
- Creates a stable thermal mass that resists freezing much better than smaller, faster-cooling structures
- Allows distinct zones for propagation, vegetative growth, and flowering within a single enclosed space
- Accommodates larger equipment like potting benches, heaters, and hydroponic reservoirs comfortably
- Increases property appeal with a permanent, high-quality structure rather than a temporary plastic hoop house
- Offers the vertical height necessary for trellising indeterminate tomatoes, cucumbers, and fruit trees
Frequently Asked Questions
Does a large greenhouse kit require a foundation?
Yes. You must anchor 8x16 to 8x24 structures to a perimeter foundation or concrete slab. This prevents shifting and wind damage.
How do I heat a large greenhouse kit?
Insulation matters most. Our 8mm polycarbonate retains heat well. We recommend propane heaters (like in the MOHEAT) or electric 220V heaters.
Can I assemble a large greenhouse kit myself?
Yes, but bring help. These large kits take a full weekend for 2-3 people. The parts are pre-cut and drilled, but the sheer size requires extra hands.
Do I need a permit for these sizes?
Likely yes. Structures over 120 sq. ft. often require a permit. Check your local zoning laws regarding "accessory structures" before ordering.
Will the roof hold heavy snow?
Yes. The MONT series supports 24 lbs/sq. ft. The OverEZ uses structural lumber. We still advise raking off blizzards to protect the panels.