Ulmus minor 'Dehesa de la Villa'
| Ulmus minor cultivar | |
|---|---|
| Cultivar | 'Dehesa de la Villa' |
| Origin | Spain |
The Field Elm cultivar Ulmus minor 'Dehesa de la Villa' was cloned by root cuttings from a tree growing in the eponymous park within the Moncloa-Aravaca district of north-west Madrid by researchers at the Escuela Técnica Superior de Ingenieros de Montes, Universidad Politėcnica de Madrid in 1990. 'Dehesa de la Villa' is one of a number of cultivars found to have a very high resistance to Dutch Elm Disease, on a par with, if not greater than, the hybrid cultivar 'Sapporo Autumn Gold'. In the Madrid study, the appearance of the tree was rated 4.3 / 5. [1]
Description
'Dehesa de la Villa' is monopodial, growing at a comparatively modest rate of 63 cm per annum in the trials at Puerta de Hierro, Madrid. The branches are devoid of corky tissue. The leaves, on 6 mm petioles, are elliptic, typically oblique at the base and acuminate at the apex, the average length and width 55 × 36 mm, the margins doubly serrate. Foliar density relative to 'Sapporo Autumn Gold' is described as 'high'. [1]
Cultivation
The cultivar is undergoing further trials in a different environment in Spain, where it will be tested by inoculation in 2016. If resistance is still satisfactory, the tree will be patented by the Spanish government and released to commerce under licence.