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    Vitavia 8x12 Green Saturn 9900 Greenhouse

    Elevate your gardening experience with the Vitavia Saturn 8x12 Greenhouse - the only curved eave greenhouse with integrated gutters! Enjoy optimal growing height, ample ventilation, and a rust-free aluminum frame. Backed by a 10-year warranty, this greenhouse is a must-have for any garden enthusiast.

    More Sizes:

    Select your Glazing:

    Which glass do I need?

    Horticultural Glass

    This is standard greenhouse glass with 2' x 2' panes that overlap and join with S clips. This glass breaks into shards.

    Toughend Glass

    Recommended! Toughened Glass is much stronger than Horticultural glass and won't crack. If it does break it disintegrates into hundreds of small pieces.

    Polycarbonate Glazing

    Polycarbonate Glazing is ideal for family gardens where safety is the No 1 priority. It's virtually unbreakable and won't shatter.

    Select your Colour:

    Add a Base Plinth (Recommended):

    Do I need a Base Plinth?

    Vitavia Greenhouse Base Plinth

    Add a galvanized steel base plinth for strength and stability. Ideal for placing straight onto slabs or concrete. Includes corner posts for soft ground installations. Your greenhouse MUST sit on a raised plinth. You can build one from bricks, timber or easiest is to buy this base plinth with your new greenhouse.

    Vitavia Steel Green Base
    £123

    Get it installed by Professionals:

    Installation requires that you purchase the Base Plinth Option above. You MUST have a surface of slabs, concrete or decking. NOT soil or gravel.

    Get it installed by Professionals?

    Installation

    Please Note: Installation requires an optional base plinth (if available) on a flat, level surface like slabs, concrete, or decking that meets the minimum base size. The package includes the greenhouse, ventilation, and downpipes only; accessories and groundwork are excluded. This may extend the standard delivery time by 2-4 weeks.

    Installation is only available in these postcode areas: B, BA, BB, BD, BL, BN, BS, CA, CB, CH, CO, CR, CT, CW, CV, CV, DA, DE, DE, DH, DL, DN, DY, EH, GL, GL, GU, HD, HG, HP, HU, HX, IP, KA, KT, LA, LE, LL, LN, L, LS, M, ME, MK, ML, NE, NG, NN, NR, OX, OL, PE, PR, RG, RH, SE, SG, SK, SM, SN, ST, SW, SY, TF, TN, TS, TW, WA, WF, WN, WR, WS, WS, WV, YO.

    Installation
    £560

    Add Staging?

    £15 off
    1 Tier Staging Green
    + £74
    Qty 1
    £23 off
    2 Tier Staging Green
    + £96
    Qty 1
    £10 off
    Folding Staging Green
    + £69
    Qty 1
    £10 off
    Green Shelf
    + £49
    Qty 1

    Staging information

    1 Tier Staging Green - £74.00
    1 Tier Staging Green

    This 1 Tier Vitavia green greenhouse staging gives you a handy work surface and storage area. 1.2m(H) x 0.5m(D) x 0.75m(W).


    2 Tier Staging Green - £96.00
    2 Tier Staging Green

    This 2 Tier Vitavia green greenhouse staging gives you a handy work surface with additional low level storage. 1.2m(H) x 0.5m(D) x 0.75m(W).


    Folding Staging Green - £69.00
    Folding Staging Green

    This green staging simply folds out from the frame of your greenhouse when you need it and is supported by 2 folding legs.


    Green Aluminium Shelf - £49.00
    Green Aluminium Shelf

    Green aluminium shelf that fixes to side of greenhouse. 122cm x 15cm


    Add Ventilation?

    Auto Roof Vent Opener
    + £38
    Qty 1
    Curtain Shading
    + £27
    Qty 1
    Qty 1
    Auto Louvre Opener
    + £48
    Qty 1

    Ventilation information

    Auto Roof Vent Opener - £38.00
    Auto Roof Vent Opener

    This automatic opener for your roof vents will automatically open your roof vents to ventilate your greenhouse when it becomes too hot.


    Curtain Shading - £27.00
    Curtain Shading

    Curtain shading will protect your plants from sun scorch and provide shade to moderate temperature. 6ft x 8ft 6"


    Louvre Window Green - £49.00
    Louvre Window Green

    A louvre window brings fresh cool air into your greenhouse to moderate the temperature inside. An essential add on.


    Auto Louvre Opener - £48.00
    Auto Louvre Opener

    This automatic opener mechanism will open your louvre window for you when you’re not around. No need to worry about ventilation, this does it automatically for you! (Does not include louvre window).


    Add Extras?

    Max/Min Thermometer
    + £23
    Screwhooks
    + £7
    Qty 1
    Water Butt Connecting Kit
    + £15
    Qty 1

    Extras information

    Rainwater Downpipe Kit - £16.00
    Rainwater Downpipe Kit

    Collect the rainwater from both gutters in your greenhouse. Rainwater is the best water for your plants.


    Max/Min Thermometer - £23.00
    Max/Min Thermometer

    This thermometer will tell you your maximum daytime temperature as well as record the lowest night time temperature in your greenhouse.


    Screwhooks - £7.00
    Screwhooks

    These handy screwhooks screw into the roof bars of your greenhouse for to attach wire or string to for growing vine plants like tomatoes. 10 screwhooks per pack.


    Water Butt Connecting Kit - £15.00
    Water Butt Connecting Kit

    Hose and connector fittings to connect your Vitavia Downpipe to your Vitavia Water Butt.


    Add Green Cresting?

    Vitavia Green Roof Cresting
    + £115

    Green Cresting information

    Vitavia Green Roof Cresting - £115.00
    Vitavia Green Roof Cresting

    Complete the look of your Vitavia greenhouse with ridge crestings


    The 8x12 Green Vitavia Saturn 9900 Greenhouse uses u/v protected acrylic panels for the curved eave sections. Beautiful !

    The curved eaves on the Saturn really do look smart and set this 8ft wide greenhouse apart from the crowd. The Vitavia Saturn is also the only curvy greenhouse available with integrated gutters, so no wasting all that lovely rain water ! The Saturn benefits from high eaves to give room for high plants and the ridge height is a whopping 8ft 4" without adding a metal base !

    This Vitavia Saturn 8x12 has 4 opening roof vents for ventilation, a smooth sliding double door and integral gutters.

    Also known as the Vitavia Colorado.

    • 2570mm (8ft 5") Wide Aluminium Greenhouse - Perfect size for most gardens.
    • 3mm Horticultural Glazing - Great Light Transmission .
    • 4 Opening Roof Vents - For Good Ventilation.
    • Double Sliding Doors - Easy access for wheelbarrows and wheelchairs.
    • Silver Anodized Aluminum Frame - No rust or discolourisation!
    • Attractive Curved Eaves - For Optimum Growing Height.
    • Integrated Gutters - This is the only curved eave greenhouse with gutters !
    • Optional 60mm Galvanised Steel Base Available Below - For rigidity and strength.
    • Extra Bracing - For strength in roof and corners.
    • 10 Year Warranty - on frame and base.

    Delivery is currently within 4 weeks to UK Mainland.

    Delivery within 8-10 weeks for Green Venus and Apollo 5000 Models.

    Your exact delivery day will be confirmed with you at least 3 days before the scheduled day by email.

    Optional Installation: If you have chosen optional installation, this may add 2-4 weeks to your delivery time as stated on the website. Our installation service is provided by Greenhouse Installations UK. If you require staging or shelving assembly, you can arrange it directly with the installation team.

    Greenhouse Size Diagram

    Greenhouse Dimensions

    A: Greenhouse width

    2570mm (8′ 5″)

    B: Greenhouse depth

    3830mm (12′ 6″)

    C: Ridge height

    2540mm (8′ 4″)

    D: Eaves height

    1240mm (4′)

    E & F: Door Size

    1220mm (4′) x 2000mm (6′ 6″) (aperture)

    Minimum Base Size

    2570mm (8′ 5″) x 3830mm (12′ 6″)

    Optional Greenhouse Base with Corner Posts

    Place on hard or soft ground! Our Vitavia Green steel bases come with corner posts for installation on soft ground. These 18-inch posts can be sunk into soil and concreted in place for stability. For hard surfaces like slabs or concrete, simply omit the posts.

    Horticultural Glass Panels
    High-Quality Horticultural Glass for Optimal Growth

    Our horticultural glass provides superior light transmission, durability, and UV protection, ensuring optimal growth conditions for your plants.

    Vitavia Greenhouse
    Vitavia Greenhouses

    Vitavia Greenhouses are known for their high-quality construction, featuring corrosion-resistant aluminium frames and a range of glazing options. Designed for both novice and experienced gardeners, they offer durability, style, and excellent growing conditions.

    Vitavia Greenhouse 10 Year Warranty
    10 Year Warranty

    Vitavia greenhouses come with a 10-year warranty on the greenhouse frame. This warranty covers any manufacturing defects in materials or workmanship. However, it does not cover glass or polycarbonate. The warranty is only valid if the greenhouse is assembled according to the provided instructions

    Frequently Asked Questions

    • Do I need a Vitavia Base Plinth?

      Yes, you'll definitely need some kind of base for your greenhouse. Here's why:

      1. The front door end of the frame sits a bit lower than the rest of the greenhouse.
      2. This means it needs to hang over something sturdy, like timber battens or a Vitavia Steel Perimeter base.
    • Why choose a Vitavia Steel Perimeter base?

      It's a great option because it:

      • Helps make sure your greenhouse is nice and square
      • Keeps everything level before you start adding the glass

      Think of it as giving your greenhouse a solid foundation to stand on. It's like making sure your house has good footings – it just makes everything more stable and secure. Remember, a well-set base means a happier, longer-lasting greenhouse!

    • How do I prepare the base for my greenhouse?

      For best results, build your greenhouse on a perfectly square and level slab or concrete base, or use anchor spikes if you have a Vitavia Base. You'll find the exact measurements and instructions for using the spikes in Section '0' of your assembly guide.

    • How is the Greenhouse Packaged?

      Your greenhouse frame and base will arrive in long, thin boxes made of sturdy cardboard. The glass packaging depends on what you've ordered: boxed for horticultural glass, or as individual sheets for full pane toughened glass.

    • Where do I find the assembly instructions?

      The assembly instructions will be in the main greenhouse box, and it will clearly state “assembly instructions in this box”. You can email us at [email protected] and we can email them to you also.

    • How long does it take to build?

      Building your greenhouse is typically a weekend project: set aside Saturday for the framework and Sunday for glazing. Remember, it's crucial not to leave the greenhouse partially glazed, and the time may vary depending on the size of your greenhouse.

    • Where should I start with my greenhouse assembly?

      Begin by thoroughly reading the assembly instructions, then prepare the ground, assemble the base frame, build the greenhouse frame, and finish with glazing - in that order. Follow the instructions step-by-step, including the summary at the front of the manual, to ensure a smooth assembly process.

    • What if I'm missing parts or something is damaged?

      If you discover any missing or damaged parts, don't worry - we're here to help! Simply email us at [email protected] with your order number, and we'll get in touch with you as soon as possible to resolve the issue.

    • Do you provide installation services?

      If you're interested in this service, just add the Installation option above. One of our Professional Greenhouse Installers will install your new greenhouse for you. All we need is a properly prepared flat slab or concrete base to fit your greenhouse onto.