This certification demonstrates that we operate according to strict standards for environmental responsibility, biodiversity, and sustainable cultivation.

Groenkeur is a Dutch quality mark that stands for quality, professionalism, and reliability within the green industry.

We focus on healthy soils, nature conservation, biodiversity, and future-proof cultivation methods that support a sustainable growing environment.

NAK Tuinbouw is the independent inspection authority for the Dutch horticultural sector. It monitors the quality, health, and traceability of plants and trees. Through regular inspections and controls, NAK Tuinbouw helps prevent the spread of harmful pests and diseases, ensuring that plants can be traded safely within the Netherlands and across Europe.

Tree nurseries are inspected to ensure that trees comply with current plant health regulations. During inspections, NAK Tuinbouw checks for the presence of pests and diseases, the origin of plant material, and the registration of plant batches. These inspections help ensure healthy trees and reliable trade throughout Europe.

A plant passport is an official label or document that accompanies certain plants and trees during trade within the European Union. It contains important information such as the botanical name, origin, and the nursery's registration number. This ensures that every tree can always be traced back to its producer.

Yes. Tree nurseries that trade trees and plants within the European Union must comply with European plant health legislation. As a registered nursery, we are therefore inspected periodically by NAK Tuinbouw. These inspections are an essential part of ensuring plant health and safe trade.

Plant health refers to the condition of trees and plants. Healthy trees are free from harmful pests and diseases that could damage other trees, natural areas, or landscaping projects. Maintaining plant health is essential for creating a sustainable and future-proof environment.

Traceability means that the origin of every tree can always be identified. This makes it possible to know where a tree was grown, which inspections have been carried out, and through which stages it has been traded. It provides confidence for customers and allows any issues to be addressed quickly if necessary.

For many trees and plants traded professionally within the European Union, a plant passport is mandatory. This also applies to a large proportion of the trees we supply to landscapers, municipalities, green contractors, and tree wholesalers. The plant passport provides assurance regarding the origin and plant health of the plant material..

NAK Tuinbouw inspections provide our customers with additional confidence. They can trust that the trees they receive come from a registered nursery, comply with current plant health regulations, and have been carefully inspected. This is particularly important for projects carried out by municipalities, landscapers, and professional green contractors.

The frequency of inspections depends on several factors, including the type of cultivation and the applicable regulations. NAK Tuinbouw carries out regular inspections to ensure that tree nurseries continue to meet the required standards for plant health, registration, and traceability.

At Boomkwekerij Michels Classens, we see quality as a daily responsibility. NAK Tuinbouw inspections support this commitment by helping us supply healthy avenue trees, ornamental trees, and multi-stem trees to customers throughout the Netherlands and Europe. They also contribute to a professional and reliable tree nursery sector.