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12×7 Zalie Greenhouse
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Industry-Leading 5-Year Comprehensive Warranty. Learn More -
Over 50 Years in Business -
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Customer Support Available 7-days/week
OVERVIEW
The Zalie 12×7 cedar greenhouse pairs a sloped roof and clean architectural lines with year-round growing space inside. Every roof and window panel is made from 10mm 4-wall polycarbonate with an R-2.1 insulation value, improving heat retention by 30% over standard 6mm twin-wall. The FSC-certified, kiln-dried cedar construction resists rot, decay, and insects while staying strong through years of humidity and seasonal shifts. The Zalie has an 86 square foot interior with 23 linear feet of staging shelves. Fixed shelves hold your plants and supplies, while foldable shelves tuck down when you need more floor space for taller plants or larger projects.
- FSC-certified, kiln-dried cedar frame that naturally resists rot, decay, and insects
- 10mm 4-wall polycarbonate with R-2.1 insulation retains 30% more heat than standard 6mm twin-wall
- 1 thermostat-activated exhaust fan plus 2 drop-down windows for active and passive airflow
- 86 sq ft interior with 23 linear feet of fixed and foldable staging shelves
- Interior water spigot included for watering inside the greenhouse
- Pro-Tect™ tested to withstand 4,400 lbs of snow load and 100 mph winds
- Comprehensive 5-year warranty with U.S.-based 7-day support and 48-hour parts shipping
- Ready-to-assemble components with step-by-step guidance through AR Studio
WHAT’S INCLUDED?
Most greenhouses sell you the structure and stop there. Every Backyard Discovery greenhouse ships with the features you’d otherwise buy separately, all backed by our 5-year warranty.
- FSC-certified, kiln-dried cedar framing
- 10mm 4-wall polycarbonate panels
- 1 thermostat-activated exhaust fan
- 2 drop-down windows
- 2 air intake vents
- Lower staging shelves
- Slat wall system
- Interior spigot and exterior inlet hose connections
- PowerPort™ Electric Hub
- Anchors & all hardware
$2,999
Craftsmanship & Trust
The Creative Backyard Concepts Difference
PRO-TECT™ Tested
Engineered & proven
Quick Ship
Carefully delivered
5-Year Warranty
Comprehensive coverage
Financing Available
Flexible monthly terms
The full comparison at a glance
What’s included with a Creative Backyard Concepts greenhouse, and what most competitors charge extra for.
| Structure & Materials | Creative Backyard Concepts | Others |
| Polycarbonate glazing material Thickness & Insulation |
10mm 4-wall (R-2.1) superior year-round insulation |
4–6mm, 2-wall minimal insulation value |
| Wind rating | 100 mph | Up to ~62 mph, if disclosed at all |
| Snow load rating | 50 lbs/ft² | 14–20 lbs/ft², if disclosed at all |
| Wood frame | FSC-certified cedar | Pine or cedar, varies by brand |
| Metal frame | Galvanized steel & aluminum | Aluminum only |
| Features & Functionality | Creative Backyard Concepts | Others |
| Thermostat-activated exhaust fan | Included | DIY add-on $80–$200 |
| Air intake vents | Included | DIY add-on $25–$50 |
| Operable windows | Included | DIY add-on $150–$400 |
Show more
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| Interior water spigot | Included | DIY add-on $75–$100 |
| PowerPort™ Electric Hub | Included | DIY add-on $100 |
| Staging shelves & slat wall | Included | Add-on $150–$450 |
| Plant hooks | Included | Add-on $25–$75 |
| Wheelbarrow-friendly door | Included | Varies |
| Support & Warranty | Creative Backyard Concepts | Others |
| Warranty | 5-year comprehensive | 1–3 years, varies by brand |
| Customer service | U.S.-based, 7 days/week | Varies |
| Parts replacement | Always available, ships in 48 hrs | Often unavailable |
Greenhouse Structure Specifications
| Model (SKU) # | 2304123B |
| Roof Style | Modern single-slope roof |
| Greenhouse Nominal Size (W × D) — Excluding Pergola | 12 ft × 7 ft |
| Interior Floor Area | 86 sq ft |
| Actual Footprint Dimensions (W × D × H) | 11’–9″ × 7’–2 1/4″ × 7’–10 1/4″ |
| Roof Peak Height | 7’–10 1/4″ |
| Wall Height | 6’–6 1/4″ – back wall |
| Frame Material | 100% FSC-certified kiln-dried cedar, pre-stained light brown finish |
| Glazing Material (Roof / Windows) | 10mm 4-wall polycarbonate panels |
| Door — Type & Width | Hinged single door, 35″ wide wheelbarrow-friendly entry |
| Built-in Staging Shelves/Workstation | 23 linear feet of foldable and fixed lower shelving |
| Plant Hooks Included | None |
| Total Assembled Weight | 683 lbs (310 kgs) |
Growing Performance & Durability
| Glazing Material (Roof / Windows) | Polycarbonate panels |
| Thickness | 10mm |
| Wall Count | 4-wall commercial-grade construction |
| Insulation R-Value | R-2.1 (vs ~R-1.6 for standard 6mm twin-wall) |
| UV Resistance | UV-protected to resist yellowing, hazing, and sunlight degradation |
| Light Diffusion | Diffused light reduces plant scorching and shadows |
| Wind Rating | 100 mph |
| Snow Load Rating | 50 lbs/ft² (4,400 lbs) |
| USDA Hardiness Zone Suitability | Suitable for All USDA Zones; supplemental heat recommended in zones 3-7 and shade cloth recommended in zones 8-11 |
| Climate Use | Four-season / year-round growing |
| Passive Ventilation | 2 easy-open windows + 2 intake vents |
| Shade Cloth Compatible | Compatible with aftermarket shade cloth |
| Warranty | 5-year comprehensive coverage |
Greenhouse Site Prep & Ownership
| Foundation | Flat, level foundation required |
| Foundation Options | Concrete slab, compacted gravel base (most common), treated lumber base frame, pavers, or wood deck |
| Foundation Materials | Buyer supplied |
| Foundation Size Required | 12′-10″ W x 8′-3″ D (includes a 6″ perimeter allowance around the structure) |
| Anchor Hardware** | Concrete and ground-stake anchors included (wood-deck hardware purchased separately) |
| Orientation/Sun Exposure | South-facing location recommended; minimum 6 hours full sun daily |
| Power Hub | Patented PowerPort™ Electric Hub includes 3 outlets and 3 USB ports (power source not included) |
| Power Source | Connect to a grounded, GFCI-protected outdoor outlet using a heavy-duty, outdoor rated extension cord. For supplemental heaters or other high-wattage equipment, a dedicated electrical circuit installed by a qualified electrician is recommended. |
| Water Hookup | Exterior garden hose connection with interior spigot (garden hose not included) |
| Gutters | Available, sold separately |
| Ready to Assemble Kit | Pre-cut, pre-drilled, pre-stained, factory-labelled components |
| Recommended Crew Size | 2 adults |
| Estimated Greenhouse Assembly Time | Plan on 1-3 days, depending on skill level and available time |
| Tools Required (not included) | Power drill + drill bits, Phillips driver, open-end wrenches, socket set with drive ratchet, tape measure, square, 24″ level, rubber mallet, claw hammer, 6′ ladder |
| Assembly Aid | BILT® app (free, 3D interactive instructions, iOS + Android, works offline); printed manual EN/FR/ES |
| Largest Box Dimensions / Weight | 91.14″ × 22.2″ × 7.36″ / 134 lbs (heaviest of 7 cartons) – 2-person lift |
**Must be anchored as specified in Creative Backyard Concepts instruction manual
Why Creative Backyard Concepts
Every Creative Backyard Concepts greenhouse is built to a higher spec than what’s standard at this price point. The 10mm 4-wall polycarbonate panels deliver R-2.1 insulation, the heavy-duty framing is rated to 100 mph winds and 50 lbs per square foot of snow load. Inside, every greenhouse ships with the features competitors charge extra for — thermostat-activated ventilation, interior water spigot, PowerPort™ Electric Hub, staging shelves, slat wall, and operable windows. All of it backed by a 5-year warranty and U.S.-based support seven days a week.
See it for yourself
Step Inside Before You Buy
Take a 360-degree look inside our Cedar Greenhouse collection. See the staging shelves, the slat wall, and how the interior growing space actually feels before it ships to your driveway.
Polycarbonate Greenhouse Panels vs. Glass
Is Polycarbonate or Glass Better for a Greenhouse?
For most home greenhouse owners, 4-wall polycarbonate is the better choice. It insulates significantly more than single-pane glass (R~2.1 vs. ~0.9), diffuses light evenly to reduce plant stress, and resists impact from hail and heavy snow. Glass offers superior clarity and a longer raw panel lifespan, making it ideal for display greenhouses or mild climates where insulation is less critical.
Inside the Ventilation System
The thermostat-activated exhaust fan starts automatically when interior temperatures rise, while casement windows and low-mounted intake vents handle passive airflow when you want fresh air and pollinators in. Together, the system gives you both automatic and manual control to manage your greenhouse climate across the seasons.
Creative Backyard Concepts Blog
Resources for greenhouse owners — assembly tips, buying guides, and the answers to questions before, during, and after your build.
Greenhouse Gardening for Beginners: Everything You Need to Know Before Your First Season
A practical, no-fluff guide to starting your first greenhouse season — from choosing the right size and glazing to a month-by-month planting calendar and the five mistakes that trip up nearly every…
Greenhouse Ventilation: How to Keep Your Plants Healthy Year-Round
A closed greenhouse can hit 100°F on a mild spring day. This guide covers exhaust fans, passive vents, circulation, humidity control, and seasonal strategies to keep your plants alive — backed by u…
Polycarbonate Greenhouse Panels vs. Glass Greenhouse Panels: The Complete Comparison
Which greenhouse glazing actually performs better for your climate, budget, and growing goals? We break down polycarbonate vs. glass across insulation, light, durability, cost, safety, and climate …
Do I Need a Foundation for My Greenhouse? Options, Costs, and How to Decide
Compare four greenhouse foundation options — gravel, timber, pavers, and concrete — with real costs, trade-offs, and which one fits your greenhouse size.
How to Choose a Home Greenhouse Kit: The Complete Buying Guide
Walk through every greenhouse decision in order — from climate zone and growing goals to glazing, frame material, ventilation, and budget — so you know exactly what to look for before you buy.
How to Start an Herb Garden
Herbs are the easiest place to start growing your own food. Which ones to grow, how to group them so they thrive together, where to put them indoors or out, and how to keep them going through winter.
Assembly Instructions
Available on BILT®
Download the BILT® app for interactive 3D instructions that walk you through every step of assembly with every panel, every screw, visualized in real time.
Plan on a full weekend with two people for smaller models or up to a full week for larger models, depending on experience and pace.
Our cedar and metal greenhouses ship with pre-drilled and labeled pieces. For cedar greenhouses, most owners apply a seal or stain which is easiest to do with the panels laid out flat before assembly, though it can also be done after the build is complete. Sealant is not included.
Box Dimensions
| Box 1 | 91.14 in x 22.2 in x 7.36 in, Weight: 130.07 lbs |
| Box 2 | 91.73 in x 22.2 in x 6.26 in, Weight: 134.48 lbs |
| Box 3 | 75.98 in x 22.28 in x 6.73 in, Weight: 103.62 lbs |
| Box 4 | 73.94 in x 22.09 in x 6.1 in, Weight: 123.46 lbs |
| Box 5 | 20.24 in x 16.06 in x 13.39 in, Weight: 26.46 lbs |
| Box 6 | 91.57 in x 7.01 in x 10.2 in, Weight: 68.34 lbs |
| Box 7 | 90.87 in x 37.44 in x 3.58 in, Weight: 97.0 lbs |
12×7 Zalie Greenhouse Reviews
Reviews
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★★★★★
333 Reviews
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1 – 8 of 333 Reviews
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★★★★★
it had all of the features we wanted –shed roof
Anonymous · 21 hours ago
we assembled the greenhouse after sealing all of the wood– the instructions are very well done. My wife loves the building!! it fits so well with our mid-century home. we do have pictures of it,
Helpful? 👍 (0) 👎 (0)
★★★★★
Labeling
Ed N · 14 days ago
part numbers need to be easier to read. some took time to make out due to very faint ink
Originally posted on BILT
★★★★★
Great greenhouse
Mike · 14 days ago
The greenhouse was great to build. Instructions are very well done with the app as well for extra info. All the parts were there and very well labeled. I would definitely recommend this for anyone.
✔ Yes, I recommend this product.
Helpful? 👍 (0) 👎 (0)
★★★★★
Awesome little greenhouse.
AmiD · 28 days ago
Really happy with this greenhouse. It’s very sturdy and well built. The instructions are pretty well laid out and easy to follow. I struggled a little because I’m an idiot when it comes to building stuff but even I managed! But my favorite part is how cute it is because aesthetic is important to me. Plan to grow seedlings in spring but for now it’s a little sunny oasis. I’m also glad I went with the poly instead of glass because the diffused light is really beautiful!
✔ Yes, I recommend this product.
Helpful? 👍 (1) 👎 (0)
★★★★★
Backyard Willow Greenhouse
Jake · a month ago
very nice product .very good instructions on Bilt
Originally posted on BILT
★★★★★
Great features
Hannah · a month ago
Beautiful greenhouse. We were able to complete is a few days
✔ Yes, I recommend this product.
Helpful? 👍 (1) 👎 (0)
★★★★★
Great features, beautiful wood!
Glo135 · a month ago
It is a beautiful green house and will be useful to protect plants in cold season. Other uses during our warm weather.
Helpful? 👍 (1) 👎 (0)
★★★★★
Love our Zalie
Darth LEGO · a month ago
Wonderful greenhouse! The instructions were very clear every step of the way. All the pieces were clearly marked and made it a very easy build. Just plan to put in some time. It is not a one day project. But once it is done, you will love it! It is also very, very strong and stable. Now we just have to see how it holds up during a Colorado Winter.
✔ Yes, I recommend this product.
Helpful? 👍 (1) 👎 (0)
Frequently Asked Questions
Do I need a permit to install a backyard greenhouse?
It depends on your municipality — and the answer varies widely. In most jurisdictions, a permanent structure over a certain square footage (commonly 120–200 sq ft) requires a building permit. Some areas require permits for any permanent structure, regardless of size. Temporary or seasonal structures often do not. Check with your local planning or building department before you order. Creative Backyard Concepts greenhouses are designed to meet residential building codes in most jurisdictions when installed on an appropriate foundation — but local permit requirements are your responsibility to verify.
How long does assembly actually take?
Full weekend for small models (9×6, 10×6); up to a full week for the largest (13×11, 14×12, 14.5×12). Mid-size falls in between. Follow the BILT app step by step and it’s a homeowner project — just not an evening one.
Can I grow year-round in cold climates?
Zones 6–8: yes, typically without supplemental heat. Zones 3–5: supplemental heat required for hard freeze nights. PowerPort™ Electrical hub supports grow lights/fans; for heating, use a dedicated circuit with a UL-listed heater — not plug-in space heaters.
Are Creative Backyard Concepts greenhouses rated for severe weather?
Yes — 100 mph wind and 50 lbs/ft² snow load. Most competitors are rated to ~62 mph wind and 16–20 lbs/ft², if they disclose ratings at all. These are engineered structural ratings, not marketing estimates.
Do Creative Backyard Concepts greenhouses come with shelving?
Yes — staging shelves, slat wall, plant hooks, interior spigot, and PowerPort™ Electrical hub are all standard. No add-ons. The price you see is the greenhouse you get.
Does Creative Backyard Concepts offer shade cloth?
Not currently, but it’s in the works. All greenhouses accept aftermarket shade cloth. Install externally for best results; UV-stabilized knitted cloth at 40–50% is a common starting point for hot climates.
What size greenhouse should I buy?
Space and budget decide it. Owners consistently say go one size bigger than you think you need. Small = 9×6/10×6 (~54–60 sq ft); Medium = 11×7/12×7/12×8 (~77–96 sq ft); Large = 13×11/14×12 (~143–168 sq ft).
What R-value should I look for in a backyard greenhouse?
R-2.0 or higher for meaningful season extension. Standard 6mm twin-wall panels deliver ~R-1.6. Creative Backyard Concepts uses 10mm 4-wall polycarbonate at ~R-2.1 — closer to commercial growing spec.
Owner Support
Customer Service Specialists
Greenhouse specialists available 7 days a week, 8am–6pm CST. Real humans who know the product and can answer questions about your specific model and situation.
Call: 700-756-4445, 7 days a week, 8am to 6pm CST
Chat: Monday-Sunday, 8am to 6pm CST
Owner’s Manual
Built with heavy-duty materials, your Creative Backyard Concepts greenhouse is designed for lasting performance. Following a consistent maintenance routine is key to maximizing its lifespan, ensuring safety, and preserving the quality of each session.
Built for Real Weather
Every claim on this page is backed by verified specifications and third-party-tested Pro-Tect™ ratings.
10mm 4-Wall Polycarbonate Panels
Twice the walls and three times the insulating air chambers of standard 4–6mm twin-wall polycarbonate. The same specification used in commercial greenhouses, not entry level kits.
R-2.1 Insulation Value
At R-2.1, our 10mm 4-wall panels hold roughly 30% more heat than the 6mm twin-wall (R-1.6) on most consumer greenhouses. That’s the difference between keeping heat overnight and losing it.
Strength, Backed by Testing
Pro-Tect™ rated to withstand 4,400 lbs of snow load and 100 mph winds, the Zalie is engineered and structurally tested to perform in real-world weather conditions.
Active Ventilation for Warm Days
Most growers plan for winter cold, but even a mild spring day is the risk that catches people off guard, since a sealed greenhouse can hit 100°F or higher inside. The Zalie’s thermostat-activated 620 CFM exhaust fan and passive intake vents pull out heat automatically as temperatures rise, even when you’re not there.
Robust Cedar Framing
The FSC-certified, kiln-dried cedar frame delivers structural strength while naturally insulating against cold transfer and resisting rot, decay, and insects. Cedar develops character with age and needs only periodic sealing to maintain its finish.
Everything You Need to Start Growing
Everything here comes standard, not as upgrades or add-ons.
Thermostat-Activated Exhaust Fan
One exhaust fan automatically turns on at your set temperature and vents heat before it builds up, then cycles off once the air cools. No switch to flip, no doors to open.
Operable Windows
Two easy-open drop-down windows provide passive ventilation and airflow control, while letting in pollinators to help your plants grow and bloom.
Staging Shelves & Slat Wall
23 linear feet of fixed and foldable lower staging shelves give you space to start seeds, propagate, and tend potted plants, plus a slat wall that organizes tools, hooks, and planters vertically.
PowerPort™ Electric Hub
The PowerPort™ Electric Hub includes 3 outlets and 3 USB ports, bringing outdoor-rated power access inside the greenhouse for low-draw accessories like grow lights and fans. For supplemental heating, follow the greenhouse manual, heater manufacturer guidance, and local electrical code.
Interior Water Spigot
The exterior inlet connects your garden hose to the interior spigot, so you can water plants inside your greenhouse without hauling a watering can back and forth.
Wide Entry Door
At 35″ wide, it’s sized to roll a wheelbarrow through, so you can move bags of soil, plants, and harvest in and out without unloading first.
Ready-to-Assemble Components
Every piece comes pre-cut, pre-drilled, and labeled, so it’s ready to assemble without any measuring or cutting to do yourself.
Support You Can Rely On
Whether it’s a warranty claim or an assembly question, we’re here to help at every step.
Comprehensive Warranty
Every Creative Backyard Concepts greenhouse kit is backed by a comprehensive 5-year warranty covering the frame, polycarbonate panels, hardware, and every included feature. Replacement parts ship from our U.S. warehouse within 48 hours and stay available for the life of the product.
Real People, Expert Support
Our US-based team of greenhouse specialists is available 7 days a week, 8am–6pm CST by phone, chat, or email. Real people who know the product can help you find the right greenhouse, answer questions, or troubleshoot anything before, during, or after assembly.
Designed to Our Standards
From the materials to the features, every component is designed, tested, and manufactured to our proprietary specifications, ensuring a level of quality and performance that exceeds the market standard.
BILT® Assembly Guidance
The free BILT® app walks you through the entire build, one step at a time, in interactive 3D. Rotate each step, zoom into the joints, and see exactly where every screw goes. Works offline, on iOS and Android.
The Zalie 12×7 Greenhouse
A walk-in cedar greenhouse with a sloped roof and over 85 square feet of growing space.
Shop the Willow – Zalie Greenhouses
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9×6 Willow Greenhouse
Modern lines and a sloped roof give the Willow its contemporary profile, while 4-wall polycarbonate panels hold heat.
$ 1,799 $ 1,999
9×6 Willow Greenhouse – White
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$ 1,799 $ 2,299
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