Chestnut Treehold

No more cutting down, but a short-term treatment aimed at maintaining your chestnut trees


Chestnut Bleeding Canker (scientific name: Pseudomonas Syringae) is a plant disease that occurs on horse chestnuts. On the bark of the tree, rusty brown spots appear that bleed with a viscous liquid. If this liquid dries, rusty rust spots remain behind on the bark. The tissue dies under these areas and cracks appear in the bark. Parts of the bark, with cracks, are easy to remove.


Chestnut Bleeding Canker is a theme in all Western European countries and a very difficult to combat bacterial disease. In the Netherlands alone there are already around 350,000 chestnut trees, of which more than 60% are infected with the Pseudomonas bacterium. The disease is, in many cases, deadly for the tree. The (preventive) felling of a tree is expensive and new planting is necessary for many municipalities. The latter, in view of the contribution of mature trees to CO2 compensation in the city.


The specially developed and proven Treehold-method means that the Pseudomonas Syringea, which is responsible for the Chestnut Bloody Disease, can be removed from a Chestnut tree within four hours without causing stress and without using chemical agents.

Treehold offers a treatment plan aimed at efficiently combating the devastating chestnut disease.

The 7 step-by-step plan looks like this:

  1. The client designates the trees to be treated.
  2. Treehold takes punctures from the trees.
  3. An independent laboratory determines, on the basis of samples, whether the tree actually carries the pathogenic bacteria (baseline measurement)
  4. The treatment of the diseased trees is carried out under the supervision of Treehold.
  5. Randomly, an independent laboratory analyzes the effect of the treatment.
  6. Periodically, the health of the tree is monitored
  7. The whole is closely monitored by the University of Bologna

Note: The ecological footprint of a treatment course is many times lower than the lifting of a diseased tree and replanting!