National Garden Scheme Collection

Fennel 2.6m x 4.9m

Longer than Sorrel, this traditional greenhouse has even more room for staging and growing from the ground. We can manufacture Fennel can be made in any colour of your choice and personalise it with a range of accessories.

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NGS Open

Beautifully designed for keen gardeners, the National Garden Scheme collection represents excellent value for money. A purchase and includes a 5% donation to the National Garden Scheme. Griffin’s glasshouses offer these gardener-friendly features:

  • The beauty of wood without the maintenance.
  • Maximum ventilation prevent plants from drying out or suffering from humidity.
  • Large covered water storage tanks for clean soft rainwater storage help you water plants on hot summer days without harming the roots.
  • Customisable shelves and benches enable adjustments when your growing schemes change.
  • We design cold frames with lids that won’t lift in high winds.
  • Wide doors you can fit wheelbarrows through.


Every glasshouse is unique and so are your needs as a gardener. We can help you create the perfect environment for your plants and accessorise your glasshouse in style. Whatever your chosen style and planting plans, we can manufacture or source a full range of accessories on your behalf. We can also put you in touch with other recommended suppliers. Accessories can include:

  • Benching & shelving
  • Internal water storage solutions
  • Cold frames
  • Lighting

We’ll ensure your glasshouse is fully equipped with everything you need. Plus. we’ll gladly share our advice and experience to help you choose (and spend) wisely.

Other National Garden Scheme Greenhouses

Please note that the photos are for illustrative purposes only. The National Garden Scheme receives 5% of the list price for greenhouses in this collection sold and supplied within mainland England and Wales. The prices quoted are for the glazed structure (excluding accessories) including 20% VAT installed in mainland England and Wales. A small supplement will be applied outside of this area. The prices do not include the brick base but we are happy to provide a quote and organise any building work required.