Accoya
Cultivar has built a reputation for excellence thanks to our industry leading manufacturing processes and the quality of the materials that we use in the construction of our greenhouses. We use only the finest Accoya Wood which is guaranteed to last 50 years. So when you buy one of our Accoya Greenhouses, you know that you are buying a product that will stand the test of time.
Accoya
Key features
Class 1 Durability
Virtually rot proof Accoya wood has a 70 year service life as stated by TRADA. You can therefore be sure that our bespoke Accoya Greenhouses are built to last.
Excellent machinability
One of the benefits of using Accoya wood is that it machines into a superb finish so that we can match the high standard of our precision engineered aluminium.
Non-Toxic Natural Wood
During our Accoya greenhouse construction process we do not add anything to the timber. Accoya wood is manufactured to provide a long service life whilst retaining the natural beauty of the wood.erefore be sure that our bespoke Accoya Greenhouses are built to last.
Strong and Stable Material
Virtually rot proof Accoya wood has a 70 year service life as stated by TRADA. You can therefore be sure that our bespoke Accoya Greenhouses are built to last.
Long Lasting Accoya Greenhouses
All Accoya wood comes from well managed sustainable sources including FSC and PEFC. It is also proven to stand up to even the harshest weather conditions.
Accoya Greenhouses defy the elements
Even after prolonged immersion in water, Accoya wood has been proven to remain both straight and true. We can therefore guarantee that our Accoya Greenhouses will stand up to the elements and prove to be a long lasting addition to your garden.
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Green credentials
Green credentials
- Sustainably sourced from FSC, and PEFC Forests, it is a naturally renewable resource with green credentials.
- Accoya is 100% non-toxic and easily recycled.
- There is no need to apply chemical preservatives to Accoya.



Dimensional Stability
One of the many benefits which come with Accoya wood is that it is dimensionally stable. This means that it is less susceptible to warping and twisting over time. In fact, Accoya matches and in most cases exceeds the stability and performance of some of the very best tropical hardwoods making it ideally suited to outdoor use. A reduction in shrinkage and swelling ultimately leads to a trouble-free service life for your brand new Accoya Greenhouse.

Natural beauty of Accoya Greenhouses
At Cultivar we love wood; it brings warmth and character to our greenhouses. Accoya is naturally beautiful and adds something to Cultivar Greenhouse range that you will not find with other greenhouse manufacturers.

Outstanding performance
Accoya is considered by many to be the wood of the future due to the outstanding performance benefits that it offers. It is by no means the cheapest hardwood available, but by using this material we are ensuring that the high quality Accoya greenhouses we build for our customers benefit from all of these features and that our customers receive a product which will be unmatched elsewhere.

Consistent quality
We work hard to ensure that the Accoya greenhouses we sell to customers are up to the highest possible standards. That’s why each batch of Accoya wood we received is subjected to stringent tests to make sure that we achieve consistent levels of quality from surface to core:
- Tested to determine decay resistance.
- Tested for dimensional stability.
The longevity of wood is measured on a scale of durability. Accoya has the highest rating for durability, a Durability Class 1, which puts it ahead of species such as European Oak, Western Red Cedar and Iroko. An example of another wood with a durability of Class 1 is Teak.
Unlike ordinary woods every batch of Accoya is tested prior to being dispatched to ensure a consistent quality is achieved. This, perhaps, is one of the reasons Accoya are able to guarantee their wood for fifty years when being used outdoors. Not that it applies to our greenhouses but Accoya also guarantee their wood for 25 years when put in the ground.
To retain the newness we choose to brush the Accoya with a light translucent coating to ensure it reaches you in good condition. A further demonstration that we go the extra mile to ensure our greenhouses stand head and shoulders above the rest. Performance aside Accoya is sustainably sourced and FSC certified, so it has green credentials too.

Accoya Greenhouse Aesthetics
When we deliver your Accoya Greenhouse, you will note the generally light blond colouring of this treated timber. You will also be sure to notice that it is remarkably clear of imperfections such as knots which are common with most other hardwoods.
However, like all natural products the Accoya will still display some surface markings and signs of resin reaching the surface. Some of the timbers may also display a darker face than others. This is completely normal and not a cause for concern. In fact, many of our customers find that it only adds to the aesthetic appeal of our highly sought after Accoya Greenhouse range.

Enduring the Elements
Over time, you will notice that you Accoya greenhouse achieves an attractive grey patina. At times, this may be patchy, but is ultimately a factor which is beyond our control as it occurs on account of the location and outdoor conditions that your greenhouse faces. Where you position your greenhouse will also have an effect on this, so do bear this in mind when deciding where you would like it based.
Of course, one of the benefits of Accoya Greenhouses is that the timber is guaranteed to last 50 years. This is one of the main reasons that we’ve chosen to adopt this wood in our construction processes, so that we can guarantee longevity for our customers and products which are fit for purpose.

As time goes by
Of course, over time the gradual greying will merge into a more even finish. You will be able to remove or restrict some of the uneven patchiness yourself by simply washing down your Accoya Greenhouse with a soft brush or cloth and warm soapy (washing up liquid) water.
You may also like to add a surface treatment to your Accoya greenhouse in order to slow down the aging process. We recommend using Osmo UV Protection Oil in the 420 Clear Satin Finish if you choose to do this which contains a blend of natural oils including: sunflower oil, soya oil, thistle and linseed oil.
The team


Gordon Carruthers
Non-Executive ChairmanAfter many years fostering two of Britain’s largest greenhouse companies, gratefully still thriving, I have joined together with my son and long time brilliant technical associate to form a design led creative team.


Tim Parry
A Lifetime in Design and CraftsmanshipMy background is built on a foundation of design, time-served joinery, and crafting homes and interiors of the highest workmanship. For the past 25 years, I’ve been designing and making the most desirable greenhouses. But with Cultivar, we’ve taken things further—applying decades of knowledge and skill to create something truly innovative.
In designing this groundbreaking greenhouse, we’ve overcome limitations and improved upon the features of more ordinary models. The result? A greenhouse with exceptional ventilation—distributed evenly, eliminating hot and cold spots—while achieving a level of craftsmanship that draws comparisons to the furniture in your home.
Every material has been carefully chosen for its longevity and sustainability. FSC-certified Accoya wood, with its 50-year guarantee, pairs beautifully with precision-engineered aluminum, ensuring a structure that stands the test of time. With Cultivar, I’ve finally reached my objective: the most advanced greenhouse in the world. Designed to last a lifetime, it’s taken me more than half a lifetime to perfect—but it’s been worth every minute.


Daniel Carruthers
Understanding Gardeners and Their GreenhousesAs an avid gardener, I’m the part of the team that truly understands the needs of both gardeners and plants. Bringing a human touch to greenhouse design, I ensure that every Cultivar greenhouse is as practical as it is beautiful.
When I speak to you, I know there are hundreds of questions that may arise—about location, size, use, and specification. After 30 years of answering these queries, I have a wealth of experience to draw upon. It’s little wonder I have a deep understanding of what makes a greenhouse truly work, and I love nothing more than talking to customers about it.