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Our Planta Greenhouses Review
Planta is one of the few mid-market kit brands that gives a cold-climate buyer model-level snow and wind figures. Gen III kits were listed from $2,550 to $6,800 on August 27 before freight, the base, vents and assembly. Sigma 20 states 55 psf and 65 mph; Sungrow 20 and 26 now state 75 psf and 65 mph when properly anchored, rechecked September 26. The finished frame earns strong owner feedback. The build is slow, the glazing is 6 mm, and the rating plus warranty detail must match the exact generation in writing before you pay.
Sungrow Gen III US kit prices checked August 27, 2026: Compact 10x6.5 at $2,550, Urban 10x13 at $3,400, Sungrow 20 at $4,250, and Sungrow 39 at $6,800. Kit price only. Typical freight, the base, ventilation, tax and assembly are extra.
plantagreenhouses.com · Verified August 2026
The independent Planta reviewBefore you buy Planta Greenhouses
These are the fastest buyer pages to read next if this brand is on your shortlist.
Start with the best greenhouses roundup
The fastest way to narrow the right lane, budget, and glazing before you go deep on a brand.
Check the real all-in costs
Budget for the structure, base, anchoring, ventilation, and the power runs buyers miss.
Glass or polycarbonate for your climate
Match the glazing to your climate, hail risk, and how you will use the greenhouse before you commit to a brand.
The independent Planta review
Current Gen III prices, model-correct snow and wind figures, assembly evidence, all-in cost, and the warranty questions to settle before buying.
Best greenhouses for cold climates
Compare Planta with Riga, Palram, and the other serious winter picks by published load, glazing, and completed cost.
What size greenhouse do you need
Size it to what you grow and your climate before you commit to a model, and buy one step up.
The greenhouse buying guide
The full decision path: budget, glazing, size, base, shortlist, and what to ask before you sign.
From Planta Greenhouses
Official product imagery and links from the brand.
Images courtesy of Planta Greenhouses.
Strengths & Considerations
Strengths
- +Publishes model-level load figures: Sigma 20 Gen III states 55 psf snow and 65 mph wind; Sungrow 20 and 26 Gen III state 75 psf and 65 mph when properly anchored, rechecked September 26, 2026.
- +6 mm double-wall polycarbonate on a galvanised steel frame, which is a heavier build than most kits at this price.
- +Current product pages advertise a 10-year warranty and the company maintains US and Canadian warehouse and support locations.
Watch Out For
- −Polycarbonate diffuses light rather than transmitting it clearly, so it is not a glasshouse substitute if you want the look.
- −The 8 ft roof height and bell shape suit snow shedding but are a specific aesthetic that will not suit every garden.
- −Kit prices exclude the base, which on a structure this size is not a trivial cost.
Before You Buy: Confirm These
These are Planta Greenhouses's own documented terms and open questions, not our own test results. Confirm the specifics in writing before you order.
- ?Sungrow pages previously conflicted at 75 versus 82 psf; the 20 and 26 Gen III product pages and collection now agree at 75 psf. Ask which rating applies to the exact revision delivered and for its engineering basis.
- ?Check the rating against your local snow and wind requirements, and confirm the base and anchoring detail required for it to apply.
- ?Budget the base and foundation separately. The kit price is not the project price.
- ?Ask for the 10-year warranty schedule by component, including proration, transferability, weather exclusions and how assembly affects a claim. The full schedule was not publicly available when checked.
Alternatives to Compare
Palram Applications (Canopia)
mid rangeA sensible pick for budget-minded and first-time growers who want an inexpensive, retail-available kit and are comfortable with DIY assembly and modest insulation. Buyers in windy or snowy areas, or anyone wanting long-term durability and warmth, should either upgrade to a twin-wall model like Mythos or Glory or look at a sturdier brand; do not treat the thin single-wall entry kits as a permanent, storm-proof structure.
Solexx
mid rangeA strong pick for a serious hobby grower in a cold or windy climate who values insulation, even diffused light, and hail resistance over a clear-glass look, and who is comfortable paying more than a budget kit. Skip it if you want to see through your greenhouse walls, need maximum winter light for light-hungry plants, or are shopping purely on price, where a Palram or Rion kit will cost less.
Comparing a few brands?
Tell us your space and budget. We'll tell you whether Planta Greenhouses or one of these fits you better, and check your quote so you don't overpay.
Why Consider Planta Greenhouses?
Added 2026-08-17 after the brand-gap report measured 20 weekly US searches with no page here, against 5 for Canopia, the quietest brand we publish. The Sungrow collection and product pages conflicted at 75 versus 82 psf on 2026-08-27; rechecked 2026-09-26, the 20 and 26 product pages now agree with the collection at 75 psf and state 65 mph wind when properly anchored. Prices remain dated August 27.
Key Models
Support & Warranty
Current product pages advertise a 10-year warranty. A public component schedule, proration, transferability and full exclusions were not found when checked August 27, 2026, so request the exact terms in writing before purchase.
FAQ
Is Planta Greenhouses worth it in 2026?
Planta is one of the few mid-market kit brands that gives a cold-climate buyer model-level snow and wind figures. Gen III kits were listed from $2,550 to $6,800 on August 27 before freight, the base, vents and assembly. Sigma 20 states 55 psf and 65 mph; Sungrow 20 and 26 now state 75 psf and 65 mph when properly anchored, rechecked September 26. The finished frame earns strong owner feedback. The build is slow, the glazing is 6 mm, and the rating plus warranty detail must match the exact generation in writing before you pay.
How much do Planta greenhouses cost?
Planta greenhouses run from about $2,550 up to about $6,800 based on current pricing on plantagreenhouses.com as of August 2026. Sungrow Gen III US kit prices checked August 27, 2026: Compact 10x6.5 at $2,550, Urban 10x13 at $3,400, Sungrow 20 at $4,250, and Sungrow 39 at $6,800. Kit price only. Typical freight, the base, ventilation, tax and assembly are extra.
Who is Planta Greenhouses best for?
Buyers in snow and wind country who can handle a serious DIY build and want published load figures at kit prices rather than glasshouse prices.
What should buyers watch out for with Planta Greenhouses?
Sungrow pages previously conflicted at 75 versus 82 psf; the 20 and 26 Gen III product pages and collection now agree at 75 psf. Ask which rating applies to the exact revision delivered and for its engineering basis.
What brands should you compare against Planta Greenhouses?
Most buyers should compare Planta Greenhouses with Palram Applications (Canopia) and Solexx before deciding. That gives you a better read on price, support, and where the brand actually fits.
How strong is Planta Greenhouses on warranty and support?
Current product pages advertise a 10-year warranty. A public component schedule, proration, transferability and full exclusions were not found when checked August 27, 2026, so request the exact terms in writing before purchase.
Official sources (4) · Verified Sep 26, 2026
Methodology
Brand verdicts are based on buyer fit, build quality, support path, price pressure, and the risks that tend to show up after delivery. A strong reply from a manufacturer can improve factual clarity, but it does not improve placement.
If support coverage, warranty language, or dealer access are thin, we would rather say that plainly than hide it behind marketing copy.
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