Palram-Canopia Glory 8x12
$4,349· Nov 12, 2026
First on this list's winter and snow weights.
Winter weights: panel insulation 30% and published snow load 25%. A kit that does not publish a snow rating sinks here.
Photo: Anita Austvika / UnsplashA winter greenhouse has two jobs: keep the heat in at night and keep the roof up under snow. So this ranking gives panels 30% of the score and the published snow load 25%. A kit that doesn't publish a snow rating sinks here, because you can't plan around a number nobody gives you.
The Palram Glory wins on its 10 mm twin-wall panels. For deep snow, the YourGreenhouses Arrow (38 psf) and its rounder sibling (32 psf) are the ones to look at. Heating tips are in our winter heating guide.
$4,349· Nov 12, 2026
First on this list's winter and snow weights.
$889· Nov 12, 2026
Lowest price in the top half of this ranking: $889 for 49.1 sq ft.
$2,810· Nov 12, 2026
Rated for 38 lb/ft² of snow, the strongest published figure left on this list after the No. 1.
Order set by the winter and snow weights; each kit keeps its one overall score.
Best for gardeners who want one kit to handle cold nights, real snow and a tall grower, without a single upgrade to buy.
The catch: At $45 per square foot it costs more than twice the YourGreenhouses Polycarbonate per square foot, and its 20 lb/ft² snow rating is below the 32 to 38 lb/ft² the YourGreenhouses tunnels publish.
$4,349 at Planet Greenhouse · checked November 12, 2026
Best for snowy yards and tall growers who want a steel frame and the highest published snow rating here.
The catch: At $2,810 it is a pre-order (delivery estimated mid-January to early February); an in-stock unit was $3,123. Roof vents are $95 each and no base is listed in the kit contents.
$2,810 at YourGreenhouses · checked November 12, 2026
Best for growers who want the most covered floor per dollar with a steel frame that copes with snow.
The catch: The peak is only 78.7 in (6 ft 7 in), so tall gardeners duck near the sides. The $2,765 price is a pre-order delivered from mid-January, roof vents are $95 each and no base is listed.
$2,765 at YourGreenhouses · checked November 12, 2026
Best for serious vegetable growers who want a long steel tunnel, a long warranty and room to extend.
The catch: No wind rating is published, which costs it points in our formula. The price you see depends on the discount Bloomcabin is running: $3,372.97 on November 12, 2026, against a $6,132.67 standard price.
$3,372.97 at Bloomcabin (listed $6,132.67) · checked November 12, 2026
Best for first-time buyers who want a proper walk-in 8x12 with twin-wall panels for under $2,000.
The catch: Its 15 lb/ft² snow rating and 56 mph wind rating are fine for mild winters, not for heavy snow country. The warranty is five years.
$1,899 at Planet Greenhouse · checked November 12, 2026
Best for small yards and first greenhouses where warmth matters more than a view through the walls.
The catch: The door opening is 22.2 in wide and 64.2 in high, so you duck in and a wheelbarrow stays outside. One roof vent is light ventilation for a hot summer.
$889 at Planet Greenhouse · checked November 12, 2026
Best for beginners who want a bright, good-looking 6x8 and garden mostly from spring to fall.
The catch: Those 0.8 mm clear walls insulate far less than twin-wall, so it cools down faster at night than the Mythos, which costs $10 less. The door is 22.2 in wide.
$899 at Planet Greenhouse · checked November 12, 2026
Best for gardeners who want a bright 8x12 with a green frame and two vents, mostly for the growing season.
The catch: At $2,499 it costs $600 more than the Essence, which has twin-wall panels on the walls too. The dealer's own figures disagree a little: 15 lb/ft² and 55 mph in the spec table, 16 lb/ft² and 60 mph in the feature list.
$2,499 at Planet Greenhouse · checked November 12, 2026
Best for gardeners who want a real glass greenhouse that stands up to strong wind and lasts.
The catch: About $72 per square foot even at the Black Friday price, no published snow load, and glass holds less heat than 6 to 10 mm twin-wall polycarbonate.
$6,999 at YourGreenhouses (listed $11,699) · checked November 12, 2026
Best for tall gardeners who grow from spring to fall and want lots of light and headroom.
The catch: The 0.8 mm crystal-clear panels are single-layer, so it is a season extender more than a winter greenhouse. No base is listed; Palram's anchor kit was $129 extra at Planet Greenhouse.
$2,249 at Planet Greenhouse · checked November 12, 2026
Best for tight budgets and sheltered patios where a cheap first greenhouse beats no greenhouse.
The catch: Aosom lists a weight capacity of 8.19 lb/ft² and a wind rating of about 27 mph, and recommends a spot against a sheltered wall with ground bolts. No warranty term is stated on the page.
$381.99 at Aosom (listed $432.99) · checked November 12, 2026
Best for growers who want the most square feet for the least money and can live with unknown limits.
The catch: No snow load, no wind rating and no warranty term on the page. The sliding door is only 1.6 ft wide.
$595.99 at Aosom (listed $677.99) · checked November 12, 2026
Best for gardeners who love a resin-framed, barn-shaped greenhouse and will pour a proper foundation.
The catch: No snow, wind or warranty figure on the pages we read, so it scores low on three criteria. It needs a concrete pad or heavy timber foundation, and the Rion base kit was $469 extra.
$4,099 at Planet Greenhouse · checked November 12, 2026
| Greenhouse | Palram Glory 8x129.5/10 | YourGreenhouses Arrow9.3/10 | YourGreenhouses Polycarbonate9.1/10 | Bloomcabin High Tunnel9.1/10 | Palram Essence 8x129.0/10 | Palram Mythos 6x88.9/10 |
|---|---|---|---|---|---|---|
| Price | $4,349 | $2,810 | $2,765 | $3,372.97 | $1,899 | $889 |
| Size | 8' x 12' · 95.6 sq ft | 8.2' x 13' · 106.6 sq ft | 9.84' x 13' · 128 sq ft | 9'11" x 13'2" · 129 sq ft | 8' x 12' · 95.4 sq ft | 6' x 8' · 49.1 sq ft |
| Price per sq ft | $45.49/sq ft | $26.36/sq ft | $21.60/sq ft | $26.15/sq ft | $19.91/sq ft | $18.11/sq ft |
| Panels | 10 mm polycarbonate | 6 mm polycarbonate | 6 mm polycarbonate | 6 mm polycarbonate | 4 mm polycarbonate | 4 mm polycarbonate |
| Snow load | 20 lb/ft² | 38 lb/ft² | 32 lb/ft² | 32.8 lb/ft² | 15 lb/ft² | 15.4 lb/ft² |
| Wind rating | 60 mph | 65 mph | 65 mph | Not stated | 56 mph | 56 mph |
| Peak height | 8'10" peak | 8'0" peak | 6'7" peak | 6'11" peak | 7'7" peak | 6'10" peak |
| Warranty | 10-year | 10-yr frame, 5-yr panels | 10-yr frame, 5-yr panels | 12-year | 5-year | 5-year |
| Buy | See price | See price | See price | See price | See price | See price |
✓ marks the best figure in each row. Prices checked November 12, 2026.
Every list uses the same scores. Only the order changes with what matters most to you.
Every price was read on November 12, 2026 on the maker's or dealer's own page.
Eight criteria, the same for every kit. What isn't published scores low.
Tell Megan Hollis your yard, your winters and your budget; she answers.