YourGreenhouses Arrow Greenhouse 8x13
$2,810· Nov 12, 2026
Highest score in our formula.
6 kits · Overall weights
Best large greenhouse kits (100 sq ft and up)
Six kits with at least 100 sq ft of floor, from a $596 Outsunny to a $4,099 resin-framed Rion, in formula order.
Photo: Matt Hanns Schroeter / UnsplashTop picks
If you only read one thing
Once you have filled a small greenhouse (it takes about one season), you want floor space. These six kits all give you at least 100 sq ft, enough for two long beds and a path, or a propagation bench plus a summer crop.
The YourGreenhouses Arrow leads on our formula with a 38 psf snow rating and 8 ft of headroom. The YourGreenhouses Polycarbonate and the Bloomcabin High Tunnel give you about 130 sq ft and can be extended later. The Outsunny 8x16 is the bargain, if you can live without published ratings.
YourGreenhouses Polycarbonate Greenhouse 10x13
$2,765· Nov 12, 2026
Lowest price in the top half of this ranking: $2,765 for 128 sq ft.
Bloomcabin High Tunnel Greenhouse 10x13
$3,372.97$6,132.67· Nov 12, 2026
Rated for 32.8 lb/ft² of snow, the strongest published figure left on this list after the No. 1.
The ranking
6 kits, in order
Order set by the overall weights; each kit keeps its one overall score.
9.3/10Excellent
Best for snowy yards and tall growers who want a steel frame and the highest published snow rating here.
8.2' x 13' · 106.6 sq ft6 mm polycarbonateSnow: 38 lb/ft²8'0" peakWarranty: 10-yr frame, 5-yr panels
- 38 psf snow rating, the highest on our list
- Pointed roof sheds snow instead of letting it sit
- 8 ft 0 in at the peak on a narrow 8.2 ft wide footprint
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
9.1/10Excellent
Best for growers who want the most covered floor per dollar with a steel frame that copes with snow.
9.84' x 13' · 128 sq ft6 mm polycarbonateSnow: 32 lb/ft²6'7" peakWarranty: 10-yr frame, 5-yr panels
- 128 sq ft of floor for $2,765, about $21.60 per square foot
- Steel arch rated for 32 psf of snow and 65 mph of wind
- Modular: extends later in 6.5 ft sections
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
9.1/10Excellent
Best for serious vegetable growers who want a long steel tunnel, a long warranty and room to extend.
9'11" x 13'2" · 129 sq ft6 mm polycarbonateSnow: 32.8 lb/ft²6'11" peakWarranty: 12-year
- 12-year warranty (10 years on the polycarbonate), level with the best on our list
- About 32.8 lb/ft² snow load (160 kg/m², per Bloomcabin)
- Extends in 6 ft 6¾ in modules up to 388 sq ft
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
8.4/10Good
Best for tall gardeners who grow from spring to fall and want lots of light and headroom.
8' x 12' · 100 sq ft0.8 mm polycarbonateSnow: 15.4 lb/ft²8'6" peakWarranty: 5-year
- 8 ft 6 in at the peak and 63.4 in sidewalls: second only to the Glory for headroom
- Over 90% light transmission
- Extra-wide double doors, 45.7 in by 78.7 in, low threshold
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
8.2/10Good
Best for growers who want the most square feet for the least money and can live with unknown limits.
8' x 16.4' · 131.2 sq ft4 mm polycarbonateSnow: Not stated7'1" peakWarranty: Not stated
- $595.99 for 131 sq ft, about $4.54 per square foot
- 4 mm UV-protective polycarbonate panels
- Galvanized steel base with slant brace tubes and foot stakes
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
7.6/10Fair
Best for gardeners who love a resin-framed, barn-shaped greenhouse and will pour a proper foundation.
8'9" x 12'8" · 110.8 sq ft4 mm roof, 6 mm wallsSnow: Not stated7'10" peakWarranty: Not stated
- Resin frame that never rusts, with aluminum roof profiles
- Twin-wall panels: 4 mm roof, 6 mm walls
- Double doors 47.5 in wide and 76.4 in high
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
Side by side
Open the comparison tool →The numbers that matter
| Greenhouse | YourGreenhouses Arrow9.3/10 | YourGreenhouses Polycarbonate9.1/10 | Bloomcabin High Tunnel9.1/10 | Palram Snap & Grow 8x128.4/10 | Outsunny 8x168.2/10 | Rion Grand Gardener 8x127.6/10 |
|---|---|---|---|---|---|---|
| Price | $2,810 | $2,765 | $3,372.97 | $2,249 | $595.99 | $4,099 |
| Size | 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' · 100 sq ft | 8' x 16.4' · 131.2 sq ft | 8'9" x 12'8" · 110.8 sq ft |
| Price per sq ft | $26.36/sq ft | $21.60/sq ft | $26.15/sq ft | $22.49/sq ft | $4.54/sq ft | $36.99/sq ft |
| Panels | 6 mm polycarbonate | 6 mm polycarbonate | 6 mm polycarbonate | 0.8 mm polycarbonate | 4 mm polycarbonate | 4 mm roof, 6 mm walls |
| Snow load | 38 lb/ft² | 32 lb/ft² | 32.8 lb/ft² | 15.4 lb/ft² | Not stated | Not stated |
| Wind rating | 65 mph | 65 mph | Not stated | 56 mph | Not stated | Not stated |
| Peak height | 8'0" peak | 6'7" peak | 6'11" peak | 8'6" peak | 7'1" peak | 7'10" peak |
| Warranty | 10-yr frame, 5-yr panels | 10-yr frame, 5-yr panels | 12-year | 5-year | Not stated | Not stated |
| 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.
Not quite your garden?
Pick the list that fits
Every list uses the same scores. Only the order changes with what matters most to you.
Large (100+ sq ft): your questions
What is the best large greenhouse kit?
On our formula, the YourGreenhouses Arrow (106.6 sq ft, 38 psf of snow, 8 ft peak). For the most floor per dollar with a snow rating, the YourGreenhouses Polycarbonate: 128 sq ft for $2,765.
Can I extend a greenhouse kit later?
Some, yes: the YourGreenhouses Polycarbonate extends in 6.5 ft sections, and the Bloomcabin High Tunnel in 6 ft 6¾ in modules up to 388 sq ft.
What is the cheapest large greenhouse?
The Outsunny 8x16: $595.99 for 131 sq ft on November 12, 2026. Aosom publishes no snow, wind or warranty figure for it.