Bialbero is a plant that hosts another tree on its top.
How a bialbero has been created? The most probable answer is that some passing birds have abandoned a stone on the top of a tree and that the roots were born from it that slowly but inexorably made space in the hollow of its trunk until it reached the ground, giving life of two completely autonomous but overlapping trees.
Tonco bialbero is located in Località Cascina Piane.
The acquaintance with the general public of the bialberi in the Monferrato area has been stimulated by the work of the journalist Marina Rissone who spoke about it on the local and national pages of the La Stampa newspaper, the last time on 27 November 2018 telling about the existence of a bialbero in Dusino San Michele.