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    £20 OFF Greenhouses!

    Use code SPRING20 at checkout min order £599 (Greenhouses)

    Palram Canopia 8x20 Hobby Gardener Greenhouse

    Palram Canopia 8x20 Hobby Gardener Greenhouse
    FREE Delivery 7-10 Days ⛟     Click to enlarge - For illustration purposes.
    Palram Canopia Hobby Gardener 8x8 Greenhouse Large Double Doors
    Palram Canopia Hobby Gardener 8x8 Barn Shaped Greenhouse
    Palram Canopia Hobby Gardener 8x20 Greenhouse Dimensions
    Palram Canopia Hobby Gardener 8x20 Greenhouse with Polycarbonate Glazing
    Palram Canopia Hobby Gardener Green Base
    Palram Canopia Hobby Gardener Roof Vent
    Palram Canopia Clear Panel
    Greenhouse Size Diagram

    Quick Code: P14719

    SAVE £20 EXTRA

    Pay ONLY £2856 TODAY!

    Use code SPRING20 at checkout
    • 8ft 5" wide x 20ft 8" deep
    • Strong Resin Frame in Green
    • 4mm Twin Wall Polycarbonate Glazing
    • 1 x Roof Vent
    • Lockable Hinged Double Doors
    • Simple Construction
    • 5 Year Warranty
    Greenhouse Size Diagram

    Greenhouse Dimensions

    A: Greenhouse width

    2590mm (8′ 5″)

    B: Greenhouse depth

    6310mm (20′ 8″)

    C: Ridge height

    2070mm (6′ 9″)

    D: Eaves height

    1340mm (4′ 4″)

    E & F: Door Size

    1200mm (3′ 11″) x 1700mm (5′ 6″) (aperture)

    Minimum Base Size

    2590mm (8′ 5″) x 6310mm (20′ 8″)

    Customise your Greenhouse

    More Sizes:

    Add a Base Plinth (Recommended):

    Add a galvanized steel base plinth for strength and stability.

    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.

    Base Kit
    £347

    Add Palram - Canopia Ventilation?

    Palram Canopia Louvre Vent
    + £101

    This 10 blade louvre vent will help ventilate your greenhouse by letting in cool air to circulate around the greenhouse.

    Qty 1

    Palram - Canopia Ventilation information

    Palram - Canopia Louvre Vent - £101.00
    Palram - Canopia Louvre Vent

    This 10 blade louvre vent will help ventilate your greenhouse by letting in cool air to circulate around the greenhouse.

    Add Palram - Canopia Greenhouse Options?

    Palram Canopia Steel Work Bench
    + £77

    This heavy duty steel work bench with lower shelf is ideal for working in the greenhouse as well as storage.

    Qty 1
    Drip Irrigation Kit
    + £36

    Connects to water tap. Has a drip regulator to control dispersal.

    Trellising Kit
    + £45

    Easily hang your plants and vine crops.
    6 Roller Hooks Spool & twine
    6 Metal Shims
    48 Tomato/Pepper Clips
    12 Radial Support Hooks - Tomatoes + Cucumbers
    12 Courgette Clips

    Palram Canopia 2 Tier Staging
    + £63

    Heavy Duty resin 2 tier staging with drainage holes for plant storage. Height: 850mm Depth: 400mm Width: 800mm

    Qty 1

    Palram - Canopia Greenhouse Options information

    Palram - Canopia Steel Work Bench - £77.00
    Palram - Canopia Steel Work Bench

    This heavy duty steel work bench with lower shelf is ideal for working in the greenhouse as well as storage.

    Drip Irrigation Kit - £36.00
    Drip Irrigation Kit

    Connects to water tap. Has a drip regulator to control dispersal.

    Trellising Kit - £45.00
    Trellising Kit

    Easily hang your plants and vine crops.
    6 Roller Hooks Spool & twine
    6 Metal Shims
    48 Tomato/Pepper Clips
    12 Radial Support Hooks - Tomatoes + Cucumbers
    12 Courgette Clips

    Palram - Canopia 2 Tier Staging - £63.00
    Palram - Canopia 2 Tier Staging

    Heavy Duty resin 2 tier staging with drainage holes for plant storage. Height: 850mm Depth: 400mm Width: 800mm

    The Palram - Canopia 8x20 Hobby Gardener Greenhouse is tough and ideal for the UK’s often blustery, wet weather. The Hobby Gardener is perfect for family gardens or allotment use as it’s polycarbonate glazing won’t shatter.

    The Hobby Gardener 8ft x 20ft Greenhouse is made from poly resin which won’t bend or discolour like aluminium. Complete with it’s 4mm polycarbonate glazing this greenhouse weighs in at 375 lb’s making it a good sturdy weight which will help it to survive harsh wind and snowy conditions.

    The Hobby Gardener 8 x 20 has a 4 opening roof vents and double outward opening doors with locking latch. Palram - Canopia greenhouses are very easy to assemble as they use a unique snap-together system making it easy to do-it-yourself.

    • Easy to Build
    • 2.59m (8ft 6") Wide Greenhouse - Perfect for garden or allotment
    • Green Thick Resin Frame - Tough and Rigid
    • Barn Shaped Roof - Optimum growing height
    • 4mm Twin Wall Polycarbonate Glazing - UV Protection for Plants
    • Double Doors with latch - Easy access
    • Lockable Door Handle - Secures door in place for good wind resistance.
    • 4 Opening Roof Vents - For Ventilation.
    • 5 Year Warranty - Covers Rust and Discolouration

    1-Man Deliveries: Your new Palram Shed or Greenhouse will be delivered within 3-5 working days.

    2-Man Deliveries: Larger items will be delivered within 7-10 working days.

    You will receive a text message from Arrow XL to schedule your delivery. Please respond as soon as possible to ensure prompt delivery.

    Greenhouse Size Diagram

    Greenhouse Dimensions

    A: Greenhouse width

    2590mm (8′ 5″)

    B: Greenhouse depth

    6310mm (20′ 8″)

    C: Ridge height

    2070mm (6′ 9″)

    D: Eaves height

    1340mm (4′ 4″)

    E & F: Door Size

    1200mm (3′ 11″) x 1700mm (5′ 6″) (aperture)

    Minimum Base Size

    2590mm (8′ 5″) x 6310mm (20′ 8″)

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    Greenhouse Buyers Guide 2025

    Greenhouse Buyers Guide 2025

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    Make an informed decision by understanding how to assess your needs, compare material pros and cons, and ensure proper ventilation and positioning for a thriving greenhouse.

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    How to Prepare the Ground for a Greenhouse Base

    How to Prepare the Ground for a Greenhouse Base

    A solid base is the backbone of any greenhouse. You might think skipping this step saves time, but trust me—I've seen plenty of greenhouses fail because of poor foundations. A dodgy base causes more headaches than you'd believe.

    What happens with a bad base? Glass cracks. Doors jam. The structure twists. Water pools where it shouldn't. And fixing these problems costs way more than doing it right first time.

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    Best Position for a Greenhouse UK

    Best Position for a Greenhouse UK

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    Let me share what actually works in our unique British climate. The greenhouse position might seem like a minor detail, but it's one of those things that can make or break your growing success. I made this mistake myself when I first started - my poorly positioned greenhouse meant I was fighting an uphill battle with inadequate light and temperature fluctuations.

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