'Ademuz'

NATURAL HYBRID CULTIVAR

Ulmus x hollandica

ORIGIN

Universidad Politecnica de Madrid.

DESCRIPTION

Cloned from an ancient elm discovered in the wild in Spain, the tree both robust and fast-growing, with height increasing by up to 1m per annum. Possessed of an extraordinarily high degree of DED tolerance, without parallel for a European elm; the tree is typically distinguished by a robust straight stem forking at a height of @5m. The leaves are ovate, average size 54 x 34mm, with an acuminate apex, flushing in mid-April.

The tree is remarkably adaptable, thriving in conditions ranging from elevated arid chalk to waterlogged alluvium along rivers. The White-letter Hairstreak was discovered breeding on 10-year-old Ademuz at Boarhunt, Hants, in 2025.

PERFORMANCE

Stability

Resistance to exposure

Resemblance to native elm

Suitability for street planting

Rate of growth

Tolerance of waterlogging

Tolerance of drought