Choosing the right greenhouse is about more than just size or appearance. It is about finding a structure that suits your climate, growing goals, and long-term budget. For many gardeners, the decision comes down to two well-known brands: Planta Greenhouses and Palram Greenhouses.
In this comparison guide, we'll take a closer look at the Planta Greenhouses Sungrow 20 vs. Palram Aria 10×20 Greenhouse and the Planta Greenhouses Sigma 20 vs. Palram Balance 10×20 Greenhouse.
We'll compare their design, materials, climate resistance, pricing, and overall performance to help you decide which greenhouse offers the best value for your climate and gardening goals.
Comparing Planta Greenhouses’ Sungrow 20 vs. Palram’s Aria Greenhouse 10 × 20
The Palram Aria 10×20 Greenhouse is one of the closest competitors to the Planta Greenhouses Sungrow 20, offering a similar footprint for gardeners looking to grow throughout the year. The following comparison highlights where these two greenhouses align and where they differ.
1. Climate Resistance
- Planta Greenhouses Sungrow 20: Built for harsh climates with a snow load capacity of 75 psf (≈ six feet of light snow or three feet of packed snow) and rated to withstand winds up to 65 mph.
- Palram Aria Greenhouse 10×20: Designed for moderate conditions with a snow load rating of 16 psf (≈ 16.4 lbs/ft²), making it better suited to milder winters. Wind-resistant up to 75 mph.
2. Design & Aesthetics
- Planta Greenhouses Sungrow 20: A bell-shaped tunnel that sheds snow/wind naturally; doors at both ends with roof ventilation for cross-flow.
- Palram Aria Greenhouse 10×20: Rectangular greenhouse with a steep roof, crystal-clear walls for conservatory-like views, large double doors, and a roof vent.
3. Build Materials
- Planta Greenhouses Sungrow 20: Galvanized-steel frame + 6 mm double-wall polycarbonate (optional 10 mm).
- Palram Aria Greenhouse 10×20: Aluminum frame with galvanized steel base; multi-wall polycarbonate roof + crystal-clear wall panels.
4. DIY Friendliness & Installation
- Planta Greenhouses Sungrow 20: Intermediate build; heavier steel requires two to three people for installation; maintenance-free after installation.
- Palram Aria Greenhouse 10×20: A DIY-oriented sliding panel system featuring pre-drilled profiles, with lighter aluminum for easier handling.
Read More: Check out 5 essential tips to simplify your greenhouse build
5. Price-to-Performance Value
- Planta Greenhouses Sungrow 20: Typically priced around USD $3,700–$4,000 with galvanized steel construction, strong snow-load resistance, and excellent four-season growing value.
- Palram Aria Greenhouse 10×20: Typically priced between USD $4,500 and $5,000, depending on the retailer. It prioritizes aesthetics, natural light transmission, and modern design over heavy-duty climate resistance.
6. Post-Purchase Support
- Planta Greenhouses Sungrow 20: Backed by a 10-year warranty and supported by responsive customer service. Planta owners also benefit from the Planta Greenhouses Community, a private group of thousands of growers who share practical advice, seasonal tips, and installation guidance.
- Palram Aria Greenhouse 10×20: Covered by a 10-year limited warranty with broad availability through major retailers. While support is widely accessible, resources are primarily retailer-driven rather than community-based.
Key Differences: Planta Greenhouses Sungrow 20 vs. Palram’s Aria Greenhouse 10 × 20
| Feature | Planta Greenhouses Sungrow 20 |
Palram Aria Greenhouse 10×20 |
|---|---|---|
| Frame Material | Galvanized steel | Aluminum + galvanized base |
| Panel System | 6 mm (opt. 10 mm) double-wall PC | Multi-wall PC roof + crystal-clear walls |
| Snow Load | ≈ 75 psf | ≈ 16.4 psf |
| Wind Resistance | Up to 65 mph | Up to 75 mph |
| DIY Difficulty | Intermediate | Beginner/Intermediate |
| Warranty | 10 years | 10-year limited |
| Price | USD 3,700-4000 | USD 4,500–5,000 |
| Seasonal Storage | Extendable; permanent | Permanent |
Why Choose Planta Greenhouses Sungrow 20?
- Heavy-duty galvanized steel construction
- Excellent snow and wind resistance
- Strong year-round growing performance
- Low-maintenance ownership
- Extendable modular structure
- Backed by a 10-year warranty
- Supported by a large grower community
Explore the Sungrow Greenhouses Collection
Why Choose Palram’s Aria Greenhouse 10×20?
- Powder-coated aluminum frame with a galvanized steel base
- Crystal clear wall panels maximize natural light transmission
- 10 mm multi-wall polycarbonate roof improves roof insulation
- Lightweight design for easier DIY installation
- Backed by a 10-year limited warranty and suitable for moderate climates
Comparing Planta Greenhouses Sigma 20 vs Palram’s Balance Greenhouse 10 × 20
1. Climate Resistance
- Planta Greenhouses Sigma 20: Rated for snow loads up to 265 kg/m² (55 psf) and wind-resistant up to 100 km/h. Its rounded tunnel shape helps snow and wind move naturally across the structure.
- Palram Balance Greenhouse 10×20: Designed for moderate climates with a snow load rating of about 15 psf. Wind resistance is listed by retailers in the range of 56–62 mph.
2. Design & Aesthetics
- Planta Greenhouses Sigma 20: Continuous tunnel arc for airflow and even sun; doors/vents at both ends.
- Palram Balance Greenhouse 10×20: Angular frame with flat sidewalls; double doors + manual roof windows.
3. Build Materials
- Planta Greenhouses Sigma 20: Galvanized pipe-steel frame + 6 mm double-wall polycarbonate.
- Palram Balance Greenhouse 10×20: Aluminum frame with galvanized base; 4 mm twin-wall roof + crystal-clear wall panels.
Learn More: Discover why polycarbonate is the best greenhouse material
4. DIY Friendliness & Installation
- Planta Greenhouses Sigma 20: Intermediate; extendable modules; maintenance-free after installation.
- Palram Balance Greenhouse 10×20: DIY sliding-panel design; low-threshold ramp; wide doors.
5. Price-to-Performance Value
- Planta Greenhouses Sigma 20: Currently priced around USD $3,400 to $3,500. Its galvanized steel construction, strong climate resistance, and reliable durability make it an excellent value for serious backyard gardeners.
- Palram Balance Greenhouse 10 × 20: Typically priced between USD $4,000 and $4,500, depending on the retailer. It emphasizes easy DIY assembly and abundant natural light but offers lower snow load capacity and overall structural strength than the Sigma 20.
6. Post-Purchase Support
- Planta Greenhouses Sigma 20: A 5‑year warranty and responsive customer service give owners confidence.
- Palram Balance Greenhouse 10×20: 5-year limited warranty; broad retailer support network.
Key Differences: Planta Greenhouses Sigma 20 vs Palram’s Balance Greenhouse 10 × 20
| Feature | Planta Greenhouses Sigma 20 |
Palram Balance Greenhouse 10×20 |
|---|---|---|
| Frame Material | Galvanized pipe-steel | Aluminum + galvanized base |
| Panel System | 6 mm double-wall PC | 4 mm twin-wall roof + clear walls |
| Snow Load | 265 kg/m² (55 psf) | ≈ 15 psf |
| Wind Resistance | Up to 100 km/h | Moderate |
| DIY Difficulty | Intermediate | Beginner/Intermediate |
| Warranty | 5 years | 5 years |
| Price | USD $3,500 | USD 4,000–4,500 |
Why Choose Planta Greenhouses Sigma 20?
- Galvanized steel strength at a budget-friendly price
- Rounded tunnel design improves airflow and sunlight distribution
- Snow load capacity up to 265 kg/m² (55 psf)
- Wind resistant up to 100 km/h
- Extendable modular structure
- Reliable year-round growing performance
- Excellent value for serious hobby gardeners
Explore the Sigma Greenhouses Collection
Why Choose Palram’s Balance Greenhouse 10×20?
- Lightweight aluminum frame for easier DIY assembly
- Crystal clear wall panels maximize natural light transmission
- 4 mm twin wall polycarbonate roof helps diffuse sunlight
- Manual roof vent, wide double doors, and integrated gutter system improve ventilation andwater collection
- Well suited for moderate climates with milder winters
- Backed by a 5-year limited warranty