Product Description

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Alton Evolution Octogonal Greenhouse

The  Alton Evolution Octogonal Greenhouse is an astutely designed, robust greenhouse - using the same construction method as the rest of the Alton Evolution range. The finish, attention to detail and amount of material used to manufacture it, is unprecedented at this price. All of the potential 'rot points' have been designed out of the greenhouse.

This greenhouse is guaranteed not to rot for 10 years. That said, we would recommend you treat your greenhouse every 3 years, this way your greenhouse could last 30, 40 maybe even 50 years.

Alton have taken their superior design know-how and superb craftsmanship to create this sylish and highly practical garden building.

Premium Octagonal Cedar Greenhouse – Elegant, Durable & Built for Growing Success

The Alton Octagonal Greenhouse is a luxury garden greenhouse that combines timeless style with exceptional horticultural performance. Crafted in the UK from premium Grade 1 Western Red Cedar, this rot-resistant wooden greenhouse offers natural beauty, long-lasting durability, and an optimal environment for plant growth.

Designed with serious gardeners in mind, it features high eaves for extra growing height, automated roof vents, and manual side louvre windows for outstanding air circulation and climate control. The steep-pitch roof sheds snow easily, while toughened 3mm safety glass and screw-in aluminum capping ensure strength and safety in all seasons.

A unique aluminum base plinth elevates the timber frame, protecting it from moisture and ground-level wear. The lockable double doors with a low threshold allow easy access, even with wheelbarrows or trays.

Now upgraded with sleek aluminum staging and integrated guttering in a contemporary Moss Green powder-coated finish, the Octagonal model delivers a perfect blend of modern design and traditional craftsmanship.

Whether you're growing vegetables, exotic plants, or looking for a stunning garden centerpiece, the Alton Octagonal Cedar Greenhouse offers unbeatable performance and curb appeal. A top choice for gardeners seeking a stylish, ventilated, high-end greenhouse that stands the test of time.

Features and Specifications of The Alton Evolution Octogonal Greenhouse

We are currently offering 1 size, here are the common Configurations of Evolution Octogonal Greenhouse

• 🌳 Western Red Cedar : The Alton Evolution models use thick glazing bars which are based on 44x 44mm timbers or 44x69mm in places.
• 🌳 Extremely strong frame - This is the strongest greenhouse you can currently buy (Combination of wood or aluminum). It really is that sturdy!
• 🌳 Uses only single sheets of toughened glass, instead of the more common overlapping smaller sections
• 🌳  With large pane toughened glass, you get a greenhouse that looks far neater, is easier to keep clean, and of course is safer.
• The Alton Durham features 3 mm tempered glass and a steep 45º roof angle, designed to allow snow to slide off effortlessly, reducing the risk of buildup and potential structural damage.
• 🌳 One set of Hinged doors 
• 🌳 Very secure Door Lock.
• 🌳 Low level threshold
• 🌳 Guttering and Downpipes both sides are included as standard
• 🌳 Includes: gutters with down spouts
• 🌳 Made in UK 🇬🇧
• 🌳 Warranty: Free 10 Year Guarantee.

1st Size:  Alton Evolution Octogonal Greenhouse 9ft2" x 11ft 10" (9'x12')

Dimensions:

• 🌳 Glass Option: Uses toughened safety glass (3mm tempered glass that is 700% tougher than regular horticulture glass.
• 🌳 Frame: Extra Strong Cedar 
• 🌳 Area: 101 sqft
• 🌳 2 Roof windows with Automatic Window Openers and 2 Large Side Opening Vents for the Workshop
• 🌳 2 louvered window with Manual openers
• 🌳 One set of single Hinged door.
• 🌳 Tall design – 9ft8" for peak height – The extra height gives you a better atmosphere for your plants and more headroom for your plants—and for you!

Important Shipping & Delivery Information 

• 🌿Curbside Delivery
• 🌿Delivery is done through LTL Motor Freight and is free, unless you live in an area with limited access (i.e. island etc...this is extremely rare) this might incurr extra fees.
• 🌿We ship using an 18 wheeler (let us know if there are tight roads or low hanging wires, manufacturer cannot guarantee the availability of a smaller truck)
• 🌿 Someone will need to be available to receive the greenhouse. We will call to set up a delivery timeframe. Driver might need help although he will do most of the work.

• Current lead time: if item is in stock then 1 to 2 weeks to process and package then 5 to 7 business days for delivery. If item is not in stock, this will be considered a special order and might take between 12 to 14 weeks. Contact us and we will let you know about current lead time. 

*For more information, please check shipping and returns page in the menu below.

Technical Documents

• 📝 Assembly and foundation document

• 📝 

  Alton Evolution Octagonal 9x12  Base Plan
• 📝 Warranty Document

Technical Documents

Shipping & Delivery

• 🌿Curbside Delivery
• 🌿Delivery is done through LTL Motor Freight and is free, unless you live in an area with limited access (i.e. island etc...this is extremely rare) this might incurr extra fees.
• 🌿We ship using an 18 wheeler (let us know if there are tight roads or low hanging wires, manufacturer cannot guarantee the availability of a smaller truck)
• 🌿 Someone will need to be available to receive the greenhouse. We will call to set up a delivery timeframe. Driver might need help although he will do most of the work.

Video and Picture Gallery