The Japanese Elm

cultivar A cultivar is a kind of Horticulture, cultivated plant that people have selected for desired phenotypic trait, traits and which retains those traits when Plant propagation, propagated. Methods used to propagate cultivars include division, root a ...

''Ulmus davidiana'' var. ''japonica'' 'Reseda' is an American

raised by the

Wisconsin Alumni Research Foundation The Wisconsin Alumni Research Foundation is the independent nonprofit technology transfer organization serving the University of Wisconsin–Madison and Morgridge Institute for Research. It provides significant research support, granting tens o ...

(WARF) as clone no. 43–8. 'Reseda' was grown from seed sent from

Hokkaido is the list of islands of Japan by area, second-largest island of Japan and comprises the largest and northernmost prefectures of Japan, prefecture, making up its own list of regions of Japan, region. The Tsugaru Strait separates Hokkaidō fr ...

, Japan, in the late 1950s. Although not released in its own right, it was destined to become the female parent of the highly successful hybrid cultivars 'New Horizon' and 'Rebona'.

Description

The leaves and fruit are similar to the species. The species does not sucker from roots.

Pests and diseases

'Reseda' has a moderate resistance to Dutch elm disease.

Cultivation

Several examples are known to survive in

Wisconsin Wisconsin ( ) is a U.S. state, state in the Great Lakes region, Great Lakes region of the Upper Midwest of the United States. It borders Minnesota to the west, Iowa to the southwest, Illinois to the south, Lake Michigan to the east, Michig ...

, notably one in the garden of the late Eugene Byron Smalley. Specimens of the clone were sent from Wisconsin to Conrad Appel KG, of

Darmstadt Darmstadt () is a city in the States of Germany, state of Hesse in Germany, located in the southern part of the Frankfurt Rhine Main Area, Rhine-Main-Area (Frankfurt Metropolitan Region). Darmstadt has around 160,000 inhabitants, making it the ...

, Germany, which named the tree 'Reseda' (possibly after reseda green), but ultimately did not market the tree owing to its only moderate resistance to DED. NB: The tree was later confused with a pendulous form of ''

Ulmus pumila ''Ulmus pumila'', the Siberian elm, is a tree native to Asia. It is also known as the Asiatic elm and dwarf elm, but sometimes mistakenly called the "Chinese" elm (''Ulmus parvifolia''). ''U. pumila'' has been widely cultivated throughout A ...

'' in Germany, and specimens so misnamed may still survive there.

Accessions

Not known.

References

Japanese elm cultivar Ulmus articles missing images Ulmus {{Ulmaceae-stub