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Small Greenhouse Kit
Get Year-Round Gardening with a Small Greenhouse Kit
You don't need a massive backyard to grow your own food. Our Small Greenhouse Kit collection helps you harvest fresh vegetables right from your patio, balcony, or compact urban garden. These kits let you start planting earlier in the spring and keep harvesting late into the fall. You get the protection your plants need in a size that fits your life.
Check out our selection below. We carry everything from flexible portable units to heavy-duty 8x8 and 8x12 permanent structures that handle real weather.
Chase the Sun with a Rolling Portable Small Greenhouse Kit
Made for: Renters, balconies, patios, and protecting indoor starts.
Gardens shouldn't be stuck in the shade. The Riverstone GENESIS Rolling Portable Greenhouse solves the problem of shifting sunlight. You can easily roll this Small Greenhouse Kit across your deck to catch the morning rays or move it into the garage when a hard freeze hits. You won't need a single tool to put it together—the frame simply snaps into place.
- Move With Ease: Heavy-duty caster wheels let you relocate your garden in seconds.
- Block the Cold: The clear PVC cover traps heat effectively to jumpstart your seedlings.
- Stay Organized: Strong metal mesh shelves hold your heavy pots and allow water to drain through.
- Sizes Available: 3-Tier, 4-Tier, Medium Walk-in, and Large Walk-in.
Build a Forever Garden with an Aluminum Small Greenhouse Kit
Made for: Permanent spots, windy areas, and year-round growing (8x8 & 8x12 sizes).
Stop wasting money on cheap plastic covers that tear after one season. The Riverstone MONT series brings commercial-grade strength to your backyard. These kits use US-grade extruded aluminum, making the frame much heavier and stronger than typical imports. We stock the 8x8 and 8x12 sizes to give you a robust small greenhosue kit that actually withstands snow and wind.
Why the MONT stands out:
- Better Insulation: 8mm twin-wall polycarbonate walls act like double-pane windows to keep heat inside.
- Serious Strength: The frame holds up to 24 lbs/sq. ft. of snow and handles 65 MPH winds.
- Easy Entry: Large double doors (4ft x 6ft) give you plenty of room to wheel in soil and tools.
Choose the right package for your weather:
- Standard Black Edition: Get the essentials. This kit includes the strong frame, panels, and an automatic roof vent. It handles general gardening perfectly.
- Mojave Edition (Hot Climates): Stop plants from burning. This kit adds a solar-powered ventilation system that pushes hot air out automatically.
- MOHEAT Edition (Cold Climates): Grow through the winter. This package includes a radiant heating propane system and excellent insulation to fight the frost.
- Growers Edition (Maximize Harvests): Grow like a pro. This kit adds a drip irrigation system and light-diffusing panels to help plants grow evenly.
Add Rustic Charm with a Wooden Small Greenhouse Kit
Made for: taller plants, scenic backyards, and maximum headroom (8x8 & 8x12 sizes).
You don't have to settle for an industrial look. The OverEZ Small Greenhouse Kit combines function with the beauty of Amish craftsmanship. Built with pressure-treated Southern Yellow Pine, this structure looks natural in your garden and resists rot and insects. It is a solid, beautiful addition to your property.
- Grow Taller Plants: The ceilings soar to 115 inches, giving you room for tall tomatoes or hanging baskets.
- Control the Airflow: An exhaust fan with a speed controller helps you manage humidity and heat on hot days.
- Protect Your Greens: 8mm multi-wall polycarbonate panels block UV rays but let the good light soak in.
- Sizes Available: 8x8 (80 sq. ft.) and 8x12 (96 sq. ft.).
All the Benefits That Come with a Small Greenhouse Kit
- Fits perfectly on balconies, patios, and tight corners to maximize your limited growing space
- Extends your harvest season so you can start seedlings earlier and pick vegetables later into fall
- Reduces heating bills with a compact footprint that retains warmth more efficiently than larger structures
- Shields your plants from heavy wind, frost, and pests without the need for chemical pesticides
- Controls humidity and temperature precisely to create the ideal microclimate for delicate starts
- Assembles quickly and moves with you easily, offering a flexible solution for renters and beginners
Frequently Asked Questions
What fits inside a small greenhouse kit?
An 8x8 kit gives you 80 sq. ft. of space. That is enough room for two rows of shelving, a potting bench, and plenty of starter trays or mature vegetable plants.
Do I need a permit for a small greenhouse kit?
Usually, no. Most 8x8 and 8x12 structures count as temporary garden sheds. However, you should always double-check with your HOA or local zoning office just to be sure.
How hard is it to build these kits?
The portable units snap together in minutes. The permanent MONT and OverEZ kits are DIY-friendly but usually take a full weekend for two people to assemble.
Will a small greenhouse kit survive winter snow?
Yes. The MONT series is rated for 24 lbs/sq. ft. of snow, and the OverEZ wood frame is structurally sound. We still recommend brushing off heavy accumulation.
Do these kits come with a floor?
No. You need to anchor these kits to a foundation you provide, like wood, concrete, or gravel. This keeps the structure stable and allows water to drain properly.