# Best Greenhouse Kits

> Backyard greenhouse kits from Palram-Canopia, Rion, YourGreenhouses, Bloomcabin and Outsunny, compared on dated US prices, panels, snow and wind ratings, headroom, warranty and a scoring formula you can check. US English. 13 greenhouse kits compared, prices checked on November 12, 2026.

- Website: https://best-greenhouse-kits.com/
- Language: English (US)
- Publisher: Mint Technology LLC, 4405 Jager Dr NE, Ste C4-4375, Rio Rancho, NM 87144, USA
- Contact: contact@best-greenhouse-kits.com
- Full version: https://best-greenhouse-kits.com/llms-full.txt

## Methodology

- [How we score](https://best-greenhouse-kits.com/methodology/): one score out of 10, weighted average of 8 criteria (price per square foot (dated, us) 20%, panels: insulation and thickness 20%, published snow load 15%, warranty 15%, published wind rating 10%, headroom (peak height) 10%, ventilation in the box 5%, base or anchoring in the box 5%). Criteria not published by the maker or dealer score 2/10. Displayed score = 7.5 + 0.6 × (raw − 4.5), between 7.5 and 9.6.
- [Affiliate disclosure](https://best-greenhouse-kits.com/disclosure/): some links are affiliate links; it never changes our scores.

## Rankings

- [Best greenhouse kits of 2026](https://best-greenhouse-kits.com/): No. 1 Palram-Canopia Glory 8x12 (9.5/10), 13 compared
- [Best polycarbonate greenhouse kits](https://best-greenhouse-kits.com/best/polycarbonate-greenhouse/): No. 1 Palram-Canopia Glory 8x12 (9.5/10), 12 compared
- [Best walk-in greenhouse kits](https://best-greenhouse-kits.com/best/walk-in-greenhouse/): No. 1 Palram-Canopia Glory 8x12 (9.5/10), 13 compared
- [Best large greenhouse kits (100 sq ft and up)](https://best-greenhouse-kits.com/best/large-greenhouse/): No. 1 YourGreenhouses Arrow Greenhouse 8x13 (9.3/10), 6 compared
- [Best greenhouse kits for winter and snow](https://best-greenhouse-kits.com/best/greenhouse-for-winter/): No. 1 Palram-Canopia Glory 8x12 (9.5/10), 13 compared
- [Best 8x12 greenhouse kits](https://best-greenhouse-kits.com/best/8x12-greenhouse/): No. 1 Palram-Canopia Glory 8x12 (9.5/10), 6 compared
- [Best greenhouse kits under $2,000](https://best-greenhouse-kits.com/best/greenhouse-kit-under-2000/): No. 1 Palram-Canopia Mythos 6x8 (8.9/10), 5 compared

## Reviews (overall score)

- [Palram-Canopia Glory 8x12 review](https://best-greenhouse-kits.com/review/palram-glory-8x12/): 9.5/10, $4,349 (Planet Greenhouse product page (US dealer), November 12, 2026), 95.6 sq ft, 10 mm polycarbonate, snow 20 lb/ft², wind 60 mph, 8'10" peak, warranty 10-year
- [YourGreenhouses Arrow Greenhouse 8x13 review](https://best-greenhouse-kits.com/review/yourgreenhouses-arrow/): 9.3/10, $2,810 (YourGreenhouses product page (13 ft length, pre-order), November 12, 2026), 106.6 sq ft, 6 mm polycarbonate, snow 38 lb/ft², wind 65 mph, 8'0" peak, warranty 10-yr frame, 5-yr panels
- [YourGreenhouses Polycarbonate Greenhouse 10x13 review](https://best-greenhouse-kits.com/review/yourgreenhouses-polycarbonate/): 9.1/10, $2,765 (YourGreenhouses product page (13 ft length, pre-order), November 12, 2026), 128 sq ft, 6 mm polycarbonate, snow 32 lb/ft², wind 65 mph, 6'7" peak, warranty 10-yr frame, 5-yr panels
- [Bloomcabin High Tunnel Greenhouse 10x13 review](https://best-greenhouse-kits.com/review/bloomcabin-high-tunnel/): 9.1/10, $3,372.97 (Bloomcabin US product page (9'11" x 13'2"), November 12, 2026), 129 sq ft, 6 mm polycarbonate, snow 32.8 lb/ft², wind Not stated, 6'11" peak, warranty 12-year
- [Palram-Canopia Essence 8x12 review](https://best-greenhouse-kits.com/review/palram-essence-8x12/): 9.0/10, $1,899 (Planet Greenhouse product page (US dealer), November 12, 2026), 95.4 sq ft, 4 mm polycarbonate, snow 15 lb/ft², wind 56 mph, 7'7" peak, warranty 5-year
- [Palram-Canopia Mythos 6x8 review](https://best-greenhouse-kits.com/review/palram-mythos-6x8/): 8.9/10, $889 (Planet Greenhouse product page (US dealer), November 12, 2026), 49.1 sq ft, 4 mm polycarbonate, snow 15.4 lb/ft², wind 56 mph, 6'10" peak, warranty 5-year
- [Palram-Canopia Hybrid 6x8 review](https://best-greenhouse-kits.com/review/palram-hybrid-6x8/): 8.7/10, $899 (Planet Greenhouse product page (US dealer), November 12, 2026), 49.1 sq ft, 4 mm roof, 0.8 mm walls, snow 15.4 lb/ft², wind 56 mph, 6'10" peak, warranty 5-year
- [Palram-Canopia Balance 8x12 review](https://best-greenhouse-kits.com/review/palram-balance-8x12/): 8.7/10, $2,499 (Planet Greenhouse product page (US dealer), November 12, 2026), 96 sq ft, 4 mm roof, 0.8 mm walls, snow 15 lb/ft², wind 55 mph, 7'7" peak, warranty 5-year
- [YourGreenhouses Scandiglas 8x13 review](https://best-greenhouse-kits.com/review/yourgreenhouses-scandiglas/): 8.5/10, $6,999 (YourGreenhouses product page (7'9" x 12'7"), November 12, 2026), 97 sq ft, tempered glass, snow Not stated, wind 115 mph, 7'8" peak, warranty 12-year
- [Palram-Canopia Snap & Grow 8x12 review](https://best-greenhouse-kits.com/review/palram-snap-grow-8x12/): 8.4/10, $2,249 (Planet Greenhouse product page (US dealer), November 12, 2026), 100 sq ft, 0.8 mm polycarbonate, snow 15.4 lb/ft², wind 56 mph, 8'6" peak, warranty 5-year
- [Outsunny 6x8 Polycarbonate Walk-In Greenhouse review](https://best-greenhouse-kits.com/review/outsunny-6x8/): 8.2/10, $381.99 (Aosom product page (Outsunny is Aosom's outdoor brand), November 12, 2026), 51.5 sq ft, 4 mm polycarbonate, snow 8.2 lb/ft², wind 27 mph, 6'7" peak, warranty not stated
- [Outsunny 8x16 Polycarbonate Walk-In Greenhouse review](https://best-greenhouse-kits.com/review/outsunny-8x16/): 8.2/10, $595.99 (Aosom product page (Outsunny is Aosom's outdoor brand), November 12, 2026), 131.2 sq ft, 4 mm polycarbonate, snow Not stated, wind Not stated, 7'1" peak, warranty not stated
- [Rion Grand Gardener 8x12 review](https://best-greenhouse-kits.com/review/rion-grand-gardener-8x12/): 7.6/10, $4,099 (Planet Greenhouse product page (US dealer), November 12, 2026), 110.8 sq ft, 4 mm roof, 6 mm walls, snow Not stated, wind Not stated, 7'10" peak, warranty not stated

## Head-to-heads

- [Palram Mythos 6x8 vs Palram Hybrid 6x8](https://best-greenhouse-kits.com/vs/palram-mythos-6x8-vs-palram-hybrid-6x8/): our pick Palram Mythos 6x8
- [YourGreenhouses Arrow vs YourGreenhouses Polycarbonate](https://best-greenhouse-kits.com/vs/yourgreenhouses-arrow-vs-yourgreenhouses-polycarbonate/): our pick YourGreenhouses Arrow
- [Palram Glory 8x12 vs Rion Grand Gardener 8x12](https://best-greenhouse-kits.com/vs/palram-glory-8x12-vs-rion-grand-gardener-8x12/): our pick Palram Glory 8x12
- [Palram Essence 8x12 vs Palram Balance 8x12](https://best-greenhouse-kits.com/vs/palram-essence-8x12-vs-palram-balance-8x12/): our pick Palram Essence 8x12
- [Palram Balance 8x12 vs Palram Snap & Grow 8x12](https://best-greenhouse-kits.com/vs/palram-balance-8x12-vs-palram-snap-grow-8x12/): our pick Palram Balance 8x12
- [YourGreenhouses Polycarbonate vs Bloomcabin High Tunnel](https://best-greenhouse-kits.com/vs/yourgreenhouses-polycarbonate-vs-bloomcabin-high-tunnel/): our pick YourGreenhouses Polycarbonate
- [Palram Mythos 6x8 vs Outsunny 6x8](https://best-greenhouse-kits.com/vs/palram-mythos-6x8-vs-outsunny-6x8/): our pick Palram Mythos 6x8
- [YourGreenhouses Polycarbonate vs Outsunny 8x16](https://best-greenhouse-kits.com/vs/yourgreenhouses-polycarbonate-vs-outsunny-8x16/): our pick YourGreenhouses Polycarbonate
- [Palram Glory 8x12 vs YourGreenhouses Scandiglas](https://best-greenhouse-kits.com/vs/palram-glory-8x12-vs-yourgreenhouses-scandiglas/): our pick Palram Glory 8x12
- [YourGreenhouses Arrow vs Bloomcabin High Tunnel](https://best-greenhouse-kits.com/vs/yourgreenhouses-arrow-vs-bloomcabin-high-tunnel/): our pick YourGreenhouses Arrow
- [Palram Essence 8x12 vs Palram Snap & Grow 8x12](https://best-greenhouse-kits.com/vs/palram-essence-8x12-vs-palram-snap-grow-8x12/): our pick Palram Essence 8x12

## Buying guides

- [How much does a greenhouse cost? Real 2026 kit prices](https://best-greenhouse-kits.com/blog/how-much-does-a-greenhouse-cost/): A backyard greenhouse kit cost $382 to $6,999 on our list on November 12, 2026. A good 6x8 with twin-wall panels is about $900, a good 8x12 about $1,900 to $2,500, and a snow-rated 10x13 steel tunnel about $2,800 to $3,400. Add $100 to $500 for vents, anchors or a base on some kits.
- [Greenhouse foundation: what your kit needs, and how to build it](https://best-greenhouse-kits.com/blog/greenhouse-foundation/): Every greenhouse kit needs a level, firm, anchored base. Eight kits on our list include a steel base or base kit; you then set it on pavers, a gravel pad with a timber frame or a concrete slab, and anchor it. Tunnels like the Bloomcabin anchor their arches straight into the soil. Resin kits like the Rion need a concrete pad or heavy timber foundation.
- [Greenhouse ventilation: vents, louvers and auto-openers](https://best-greenhouse-kits.com/blog/greenhouse-ventilation/): Good greenhouse ventilation means hot air out through the roof and cooler air in low down. Look for at least two openings: a roof vent plus a door, window or louver. On our list, the Palram Glory is the best equipped (two roof vents with automatic openers and a louver). Several kits need extra vents, which YourGreenhouses sells at $95 each.
- [Polycarbonate vs glass greenhouse: which should you buy?](https://best-greenhouse-kits.com/blog/polycarbonate-vs-glass-greenhouse/): For most backyards, twin-wall polycarbonate: it insulates better, doesn't shatter and costs far less per square foot. Choose glass if light and looks come first and you accept the price: the tempered-glass Scandiglas lets in up to 95% of light and was about $72 per square foot, against about $20 for the twin-wall Palram Essence.
- [How to heat a greenhouse in winter (without wasting money)](https://best-greenhouse-kits.com/blog/how-to-heat-a-greenhouse-in-winter/): To heat a greenhouse in winter, keep heat in first: twin-wall panels (6 mm or thicker), sealed gaps and thermal mass like water barrels. Then add a heater sized for your coldest nights with a thermostat, and keep some airflow. A thick-paneled kit like the 10 mm Palram Glory needs far less heating than a single-layer one.
- [What size greenhouse do I need? 6x8, 8x12 or bigger](https://best-greenhouse-kits.com/blog/what-size-greenhouse-do-i-need/): For seed starting and a few tomatoes, a 6x8 (about 49 sq ft) is enough. For two benches, a path and summer crops, get an 8x12 (about 96 sq ft): it is the size most gardeners grow into. For vegetables in quantity, a 10x13 tunnel (about 128 sq ft) or larger. When in doubt, go one size up.

## Tools

- [Comparison tool](https://best-greenhouse-kits.com/compare/): up to 3 greenhouse kits side by side (?ids=a,b,c).