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Palram Canopia 8x20 Hobby Gardener Greenhouse

  • 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.

Add Palram - Canopia Ventilation?

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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?

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

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″)