Sigma 6
Sigma 6
Clear polycarbonate Sigma 300 (Gen III) greenhouse with metal frame on a dark background
Large transparent Sigma 300 (Gen III) greenhouse with metal frame in a warehouse setting
Semicircular Sigma 300 (Gen III) greenhouse with transparent walls and a person inside, set against a natural background.
Modern  Sigma 300 (Gen III) greenhouse in a garden with trees and flowers
A detail on the frame of a Sigma 300 (Gen III) greenhouse.
Metallic canopy structure of a  Sigma 300 (Gen III) greenhouse with a view of a sports field in the background
Sigma 6
Sigma 6
Partial view of a  Sigma 300 (Gen III) greenhouse with a curved glass panel and metal frame.
A door closeup of a  Sigma 300 (Gen III) greenhouse.
A detail of a door handle of a Sigma 300 (Gen III) greenhouse.
A detail of a Sigma 300 (Gen III) greenhouse.
Close-up of a metal frame of a  Sigma 300 (Gen III) greenhouse.
Sigma 6
Sigma 6
 Sigma 300 (Gen III) greenhouse.
Metallic window of a Sigma 300 (Gen III) greenhouse with visible branding on a dark background
Close-up of a metallic door hinge of a Sigma 300 (Gen III) greenhouse.
A closeup of a Sigma 300 (Gen III) greenhouse.
Longitudinal view of a large  Sigma 300 (Gen III) greenhouse with a metallic frame inside a warehouse.
A side view of a  Sigma 300 (Gen III) greenhouse.
Sigma 6
Semicircular  Sigma 300 (Gen III) greenhouse with transparent walls and a person inside, set against a natural background.
Metallic  Sigma 300 (Gen III) greenhouse with a door and window
Transparent  Sigma 300 (Gen III) greenhouse structure with open doors in a dark indoor setting
Metallic door with a reflective surface, of a  Sigma 300 (Gen III) greenhouse.
 Sigma 300 (Gen III) greenhouse with a curved roof and transparent panels in a dark warehouse setting.
Sigma 6

Sigma 6

Sigma 6

4.8
Rated 4.8 out of 5 stars
84 Reviews

Approx Size: 3m × 6m × 2,1m

Imagine a garden filled with life yet untouched by time. A space where you can harvest heat-loving vegetables while a piercing winter storm is raging outside the door. A stable environment where vine-ripe tomatoes and succulent strawberries will thrive. A lovely quiet space to spend away from work, kids, and the chores of life.

Features

Strong and spacious: long-lasting construction, weather-resistant materials, and roomy design.

  • Insulated Doors [NEW] – Helps reduce heat loss and drafts, creating a more stable growing environment and improving energy efficiency.
  • Upgraded Door Handles [NEW] – Smooth, reliable operation with a sturdy grip for easier daily access and long-term durability.
  • Aluminum Polycarbonate Trim [NEW– Securely locks panels in place along the arch for added strength, better weather resistance, and a clean, finished look.
  • Window/Door Latch [NEW] - Makes the door and window open together.
  • Improved Snow Load [NEW] - Withstands a snow load of up to 265 kg/m² (55 psf)
  • Wind resistant up to 100 km/h for those living in gusty climates.
  • Comes with two doors (one at each end).
  • Made with a heavy-duty galvanized pipe frame and 6 mm double-wall polycarbonate panels.
  • Arched shape - so the wind, snow, and hail just slide off the sides. 
  • Extendable beyond 30 metres - so you can expand your greenhouse when you're ready.
  • Maintenance-free means you have more time to focus on your garden. 
  • We offer a 5-year warranty because our greenhouse is heavy-duty and long-lasting.
  • Access to our private Facebook group to connect with and learn from other greenhouse owners.
Běžná cena €1.775 EUR
Běžná cena €1.943 EUR Save €168 Prodej Výprodejová cena €1.775 EUR
Have questions? Call us 1-877-669-1286
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O Sigma 6

Planta Sigma 6 je splněný sen městského zahradníka. Kvalitní materiály zachycující teplo to umožňují 3 nebo 4 sezóny zahradnictví, což znamená, že budete moci sklízet chutné ovoce a zeleninu i mimo vegetační období venku. Zaoblený design je navíc neuvěřitelně prostorný a poskytuje vám prostor pro maximální využití vaší zahrady.

Přesná velikost: Rozměry 300 cm x 213 cm x 602 cm

Pocit jistoty s vědomím, že nerezový rám z pozinkovaného potrubí je dostatečně tvrdý odolávat různým nepříznivým povětrnostním podmínkám – udržujte vaši zahradu v bezpečí po celý rok.

Skleník je dodáván s:

  • dvoje dveře
  • dvě manuální okna
  • možnost instalace více oken.

Se skleníkem Sigma 6 se velmi příjemně pracuje po celý den proudění vzduchu od konce ke konci a výrazná výška střechy 2,1 metru.

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Zatížení sněhem Až 160 kg / m²
160 kg / m² se rovná 91 cm vrstvy čerstvého sněhu nebo 46 cm vrstvy utlačeného sněhu a v zimě je bezúdržbový Více o PSF
image
Odolnost proti větru do 65 mph (100 km/h)
Robustní konstrukce skleníku, která odolá větru až 100 km/h
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Rozšiřitelné a přizpůsobitelné
Tento skleník lze rozšířit o další rozšiřující sady
 
Have questions about this product?
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Reviews

4.8
Rated 4.8 out of 5 stars
Based on 84 reviews
Total 5 star reviews: 68 Total 4 star reviews: 13 Total 3 star reviews: 2 Total 2 star reviews: 1 Total 1 star reviews: 0
96%would recommend these products
Slide 1 selected
84 reviews
  • D
    Diana
    Verified Buyer
    Reviewing
    Sigma 10 (Gen II)
    I recommend this product
    Location Idaho
    Rated 5 out of 5 stars
    3 months ago
    Buying More!

    We love our sigma greenhouse, it has kept our garden going during this winter. We installed a wood stove inside it! and the pipe did not destroy the poli! We are super happy with this greenhouse, we are planning on expanding it or buying a bigger one. I highly recommend this greenhouse, money very well invested! We live in Idaho for reference.

    PG Profile picture for Planta Greenhouses EU
    Planta Greenhouses EU
    3 months ago

    Thank you so much, Diana! We're thrilled to hear how well your Sigma 32 is performing through the Idaho winter. It's fantastic that you were able to install a wood stove and that the poly held up beautifully. Your experience keeping the garden going through winter is incredibly valuable feedback and will be so helpful for other growers in similar climates.

    Thank you for the wonderful recommendation and for sharing how well your investment has paid off. Here's to many more successful growing seasons ahead!

  • CV
    Carl V.
    Reviewing
    Sigma Urban (Gen II)
    I recommend this product
    Location Oregon
    Rated 4 out of 5 stars
    8 months ago
    Booklet Instructions Bad for Sigma 2021 Euro

    The Booklet Instructions do not match the sequence of the video instructions which required rework.

    I had lots of problems getting the end panel polycarbonate panels to line up properly, partly because the screw holes were correctly drilled on the bottom of the frame. The polycarbonate end panels should be installed after the doors and windows are installed.

    The booklet instructions has you install the doubled-sided tape to the end of the polycarbonate panels, but the video shows installing the tape to the profile which works lot better. It should be only installed to one side of the profile which make installing much easier.

    I could not get the panels on one end to line up correctly with the profile. I fought with it several hours, but it would not line up correctly. The one end fell right in place. I should have started from that end first.

    The greenhouse is built very strong.

    PG Profile picture for Planta Greenhouses EU
    Planta Greenhouses EU
    8 months ago

    Hi Carl,

    Thank you for taking the time to share your detailed feedback and for the 4-star review! We really appreciate you highlighting both the challenges you faced and the positive aspects of your Sigma Urban.

    We understand how frustrating it can be when instructions don't align perfectly, and we're sorry the booklet and video sequences caused confusion and extra work during your build. Your insights about the double-sided tape application and the order of installing end panels versus doors and windows are incredibly valuable — we'll definitely pass these along to our product team for future improvements.

    It sounds like you discovered some helpful techniques along the way, especially regarding the tape placement on the profile rather than the panels. These kinds of real-world insights from experienced builders like yourself help us improve the process for future customers.

    We're glad to hear that despite the assembly challenges, you found the greenhouse to be built very sturdily. That's precisely what we aim for with our structures.

    Thanks again for your patience during the build and for sharing your experience!

  • JS
    Jacqueline S.
    Verified Buyer
    Reviewing
    Sigma 6 (Gen II)
    I recommend this product
    Rated 4 out of 5 stars
    11 months ago
    Chicago Cold, Cozy Greenhouse & a Love Story Inside

    We installed our Sigma greenhouse with an extension in 2022, making it 20 feet long—plenty of room for our growing needs and winter refuge. In the frigid Chicago climate, our Planta Greenhouse has been nothing short of a game changer. We use it to protect perennials like palm trees, bird of paradise, lavender, eggplant, peppers, crotons, tradescantia, geraniums, and elephant ears—especially the ones that can’t stay indoors due to our cats. All the pet-safe plants stay in the house, and everything else thrives inside the greenhouse. We also get a two-month head start on our annuals, which is huge for Chicago gardening. As of early February, we already have peppers, tomatoes, daisies, petunias, cosmos, morning glories, cucumbers, and forget-me-nots started.

    Our greenhouse has become our favorite place to be. We spend all winter inside, soaking up the sun while it's freezing or snowing outside. It’s our little haven—a space for plant care, self-care, and memory-making. In fact, it became so special that Marcin proposed to me right there in the greenhouse. Of course, I said YES!

    We added electric to the structure to make year-round use possible, and we installed a propane space heater for the coldest weeks. Two 65-gallon water jugs provide all the irrigation we need through winter. A compost bin adds warmth and allows us to reduce waste, and we’ve included shelves with grow lights to supplement sunlight. We also have a dedicated seed-starting station at the front of the…

  • A&
    Angela & Gregory R.
    Verified Buyer
    Reviewing
    Sigma 6 (Gen II)
    I recommend this product
    Rated 5 out of 5 stars
    11 months ago
    It Saved Our Plants During Hurricane Season

    For years, owning a greenhouse had been a dream of ours—and now it’s become a key part of how we live and grow. The greenhouse works in tandem with our outdoor garden to supply nearly all of the produce we consume. Once the colder months arrive, we transition entirely to greenhouse-grown food, eliminating the need to buy from the grocery store.

    Inside, we grow tomatoes, potatoes, peppers, beets, carrots, leeks, peas, string beans, broccoli rabe, kale, lettuce, mustard greens, basil, mint, eggplant, strawberries, and even lemon and fig trees, which we move in during winter along with our hibiscus and blueberries. It’s glorious watching everything thrive, even in below-freezing temperatures. The greenhouse has become our winter escape and has even protected many plants during hurricane season and high winds.

    Our buying experience was seamless—we didn’t even need to contact customer service. Reading customer stories from people in similar climates was incredibly helpful and gave us the confidence to move forward.

    We customized our setup by building the greenhouse on a 4x4 wood foundation attached to concrete footings, giving us an extra foot of interior height. Inside, we added raised beds, a pebble stone walkway, and sealed all seams with silicone for extra insulation.

    What we love most is the beautiful retro vibe of the greenhouse, paired with its sturdiness—it’s already held up to 50 mph winds without any issues. As we continue to learn and grow, we’re also exploring…

  • MD
    Mei D.
    Verified Buyer
    Reviewing
    Sigma 6 (Gen II)
    I recommend this product
    Rated 5 out of 5 stars
    1 year ago
    Morning Coffee in My Warm Greenhouse

    We purchased our Sigma 20 greenhouse from Planta in 2022, and it arrived within a week—even before we had finished building our foundation! As new greenhouse owners and gardeners, we've really enjoyed experimenting with a variety of plants inside: peppers, cucumbers, tomatoes, herbs, and even a surprise squash that popped up by accident.

    Our Planta Greenhouse has helped us extend our growing season and complement our outdoor garden. It’s been so rewarding to move toward year-round growing. To support that, we’ve added a fan for airflow and some LED lighting to keep things thriving even as the days get shorter.

    One of our absolute favorite things? Enjoying a hot cup of coffee inside the warm greenhouse on a frosty January or February morning—it honestly feels like a mini vacation. We'd love to add an extension someday (we already built the foundation to fit it)!

Shipping

Sigma 3x6 (Gen III) ships in these boxes:

  L, (cm) W, (cm) H, (cm) Weight, (kg) Quantity
Sigma Base 1 210 112 8 26 1
Sigma Base 2 210 112 5 14 1
Sigma Polycarbonate Extension 210 112 5 14 1
Sigma Greenhouse Frame 1 196 45 10.5 36 1
Sigma Greenhouse Frame 2 204 18 10.5 36 1
Sigma Greenhouse Frame 3 196 45 9.5 38 1
Sigma Greenhouse Extension 196 43.5 7 33 1
Total weight: 197

 

Skleníky jsou úžasné produkty,  a vyžadují speciální přepravu a manipulaci. To je důvod, proč jsme v uplynulém roce pilně pracovali na zajištění zvýhodněných přepravních sazeb pro naše zákazníky. Ceny dopravy se zobrazí na stránce pokladny na základě vaší adresy.

  • Budeme vás kontaktovat pro potvrzení ceny dopravy na základě vaší polohy a velikosti objednávky.
  • Doprava u většiny objednávek obytných skleníků se pohybuje mezi 250 a 450 USD, zákazníci ve vzdálených oblastech si možná budou muset připlatit.
  • Při zadávání objednávky se ujistěte, že jste zadali správně  Telefon a adresa u pokladny. Budete kontaktováni od  telefon před odesláním zboží. Za doručení na nesprávné adresy nemůžeme ručit.
  • V rámci procesu doručení požadujeme kontaktní telefonní číslo (aby vás mohla kontaktovat kurýrní společnost) před  položka je odeslána.
  • Neposíláme do poštovních schránek, protože ve většině případů budete muset zboží podepsat.
  • Objednávky zadané o víkendech nebo státních svátcích se začnou zpracovávat až následující pracovní den.

FAQs

Obytné skleníky

Jsou dveře na obou koncích skleníku?

Yes! All of our Sungrow models come with manual doors and a manual window above the door on both ends of the greenhouse.

Máte štíhlé skleníky?

Unfortunately, we do not have any lean-to greenhouses available at this time.

Vyrábíte skleníky na míru?

All of our products come pre-packaged by the manufacturer and can only be customized in length (2m extension). However, the height of the greenhouse can also be increased if placed on a base (up to 1.5m above the ground).

Jak je skleník ukotven k zemi?

Every greenhouse kit comes with optional legs that can be dug directly into the ground. The amount of legs included depends on the greenhouse size.

Z čeho je rám vyroben?

The greenhouse frame is made out of heavy-duty galvanized steel.

Jaké polykarbonátové panely se používají pro obytné skleníky?

We use 6mm heavy-duty, double-walled polycarbonate panels with a UV-protected outside layer for our Residential Greenhouses.

Jaký typ základny/základu je pro mě nejlepší?

There are several different types of greenhouse bases, information, and pictures posted by our customers on our Customer Stories page and our Planta Facebook page. Additionally, you can learn more about "Types of Greenhouse Bases - With Pros & Cons of Each" on our blog.

Časté dotazy Sigma větrací okno

Časté dotazy Sigma automatické větrací okno

Skleníky Sigma

Jaké je zatížení sněhem a odolnost proti větru u modelů Sigma?

Sigma models can hold a snow load weight of 160 kg / m2 or 91cm of fresh snow on top of the greenhouse. The wind resistance is 100km/h.

Instalace Sigma

Existuje podpora po nákupu?

Absolutely! Our after-sales customer service team is available to answer any and every question. You can fill out our contact form or give us a call at +44 (800) 208-8945.

Jaké zdroje jsou k dispozici pro pomoc s instalací skleníku?

We offer several resources to help you with the installation process:

  1. Bilt App: Downloadable on the Apple Store and Google Play, it provides digitized step-by-step instructions.
  2. YouTube videos: A series of detailed video tutorials to guide you through the installation process.
  3. Printed Manual: Comes included with your greenhouse.
  4. Blog: Explore our blog for valuable insights such as "Expert Advice: 9 Tips For Installing Sungrow Greenhouses With Ease!"
  5. Customer-Only Facebook Group: Connect with other customers for valuable installation tips.

If you still need assistance, our customer service is ready to help via phone or email.

Jaký typ základny/základu je pro mě nejlepší?

This can vary depending on your location, gardening plans, and desired aesthetic. To better understand the different options available, you can find several different types of greenhouse bases, information, and pictures posted by Planta Greenhouse owners on our Customer Stories page and our Planta Facebook page. Additionally, you can learn more about it on our Greenhouse Bases blog.

Možnosti přizpůsobení

Mohu přidat vlastní větrací otvory, ventilátory, ohřívače a světla?

Of course! The polycarbonate is very easy to work with, and the galvanized steel frame is strong enough to support any additional accessories.

Mohu získat delší skleník?

Most of our residential and commercial greenhouses are extendable up to 30 metres. Learn more about our extension kits for both the Sungrow and Sigma models.

Jak mohu přizpůsobit svůj skleník?

The customization possibilities are truly endless with a Planta Greenhouse. To help you get started, take a look through “16 Ways to Supercharge Your Greenhouse” on our blog.

Jsou zavěšené rostliny, ohřívače a houpací sítě bezpečné z rámu mého skleníku? Jakou váhu zvládne, aniž by to ovlivnilo záruku?

It is safe to hang plants and accessories on a Sungrow greenhouse since each internal reinforcement arch can withstand up to 45.3 Kg. On the Sigma series, you can pre-drill the holes on the framing and hang small things. We would not suggest hanging anything heavier than 2.2 – 4.5 Kg per arch.

Mohu svůj skleník vytápět ohništěmi nebo podobnými?

You can use any heating source inside, like electricity, gas, propane, and even wood. It may be tricky to heat with wood, as you want to ensure that you keep the stove/pit away from the panels to prevent them from melting or burning if they are too close to the fire source. In this case, the customers ideally would want to come up with an exhaust system, making sure it’s not in contact with the panels, for being a flammable material.

Mohu svůj skleník vytápět ohništěmi nebo podobnými?

You can use any heating source inside, like electricity, gas, propane, and even wood. It may be tricky to heat with wood, as you want to ensure that you keep the stove/pit away from the panels to prevent them from melting or burning if they are too close to the fire source. In this case, the customers ideally would want to come up with an exhaust system, making sure it’s not in contact with the panels, for being a flammable material.