Walnuts of

Walnuts of Navarre are of premium quality, pale in colour and boast highly valued organoleptic properties. Their flavour ranges from delicate to sweet and their oil content varies from variety to variety. It is a fruit that is cultivated and processed in Navarre by producers who engage in the entire process, from cultivation to commercialisation.

In December 2022, a number of those producers gathered together under the newly formed Association for the Promotion of the Walnuts of Navarre Brand (Asociación para la Promoción de la Marca Nuez de Navarra, in Spanish) to promote the cultivation, marketing and consumption of walnuts under this collective trademark.

Production Area

Although isolated walnut trees can be found throughout Navarre, professional cultivation of this fruit began in the 1990s in areas to the south of Pamplona as a way to diversify away from grain and vineyards.

The geographic production area encompasses the entire Provincial Region of Navarre, with trees grown on non-irrigated land to the north and on irrigated land to the south.

Tierra Estella, Navarra Media and Ribera Alta are the three areas that are home to the most producers.


The Walnuts of Navarre collective trademark can only be used for walnuts that are grown in Navarre, whether on irrigated or non-irrigated land. They can be recognised by their pale coloured, large and healthy fruit and shells, with a variety of flavours that range from the delicate to the sweet and oily.

History of the Association

The Association for the Promotion of Walnuts of Navarre and then the trademark were created in response to a need in the sector to identify a product with high quality standards that is produced and processed by the farmers themselves at their own installations, and to thereby distinguish walnuts from Navarre from walnuts coming from other territories, especially France and Chile, which have been monopolising the market in recent years.

The Association for the Promotion of Walnuts of Navarre was registered with the Regional Government of Navarre in 2022 by nine founding members. Anyone who produces or produces and processes Walnuts of Navarre can join the association.

Contact details


In order to verify the requirements to be met by the walnuts protected by this trademark, producers or producers and processors must pass an audit to ensure that the product offers full guarantees to the consumer.

All the cultivation, packing and final product labelling processes are audited by the Institute of Agri-food Technologies and Infrastructures of Navarre (Instituto Navarro de Tecnologías e Infraestructuras Agroalimentarias, S.A., in Spanish). This is the quality control body responsible for ensuring that the products protected by the Collective Trademark meet the requirements of the Trademark Use Regulations.

INTIA is accredited by ENAC (Entidad Nacional de Acreditación, the Spanish National Accreditation Body, in English) in accordance with European Standard UNE-EN ISO/IEC 17065:2012.

Control in the field
Control of processing/packing installations
Quality control on the finished product

Wallnuts of Navarre

Walnuts of Navarre can be found in various formats:

  • Walnuts in their shell must be at least 28 mm in size and are conserved intact, clean and well formed.
  • Peeled walnuts are sold whole or in pieces.
  • Their use is authorised in processed products (drinks, desserts, etc.) provided that Walnuts of Navarre are used as the main ingredient, accounting for more than 50%.

Preparation and Commercialisation

To ensure optimal ripening and to decide when harvesting should begin, the producers open several walnuts and check that the internal wall separating the two halves of the kernel is brown and breaks easily. On the outside, the hull or outer layer that covers the shell has started to crack. Harvest normally begins in October, although some varieties are earlier than others.

Harvest takes place with vibrating machines that cause the fruit to fall onto nets spread out beneath the trees or onto ‘umbrellas’.

Hulling is done as soon as possible with brushes and always without using any chemical products.

The walnuts are then dried, a process that will begin within 48 hours of being hulled in order to minimise the growth of any fungus.

The entire process from cultivation to storage and packaging is undertaken by the farmers at their installations, who control and monitor everything every step of the way.

The Benefits of including Walnuts in your Diet

Walnuts are an important source of nutrients and are considered a ‘superfood’ due to their numerous properties. Those properties include:

  • Helping to regulate cholesterol and blood pressure levels, preventing cardiovascular diseases, due to their high Omega 3 content.
  • Helping intestinal health due to their high fibre content, preventing constipation and supporting the development of healthy microbiota.
  • Preventing osteoporosis due to the quantity of minerals they contain, including iron, zinc, potassium, selenium, phosphorous and magnesium.
  • Looking after the health of your brain. Their unsaturated fatty acids are necessary for correct neuronal function.
  • Contributing to proper immune system function due to their composition of Omega 3 AAL and vitamin B6.
  • Preventing ageing and certain types of cancer due to their antioxidants, especially vitamin E.


Because walnuts are high in fat, they tend to go bad relatively quickly. To prevent that, it is important to store them:

  • In their shell: In a cool and dry place.
  • Peeled: In the fridge, inside a sealed container such as a ziplock back or glass
  • Whether in their shell or peeled, walnuts keep perfectly well when frozen.