Ulmus 'Stavast'
Ulmus 'Stavast' is a Dutch hybrid elm cultivar raised at the Dorschkamp Research Institute for Forestry & Landscape Planning, Wageningen, as clone '622' from the crossing of 'Commelin' with clone '202', itself a hybrid of the Exeter Elm Ulmus 'Exoniensis' and Himalayan Elm Ulmus wallichiana.
| Ulmus 'Stavast' | |
|---|---|
| Genus | Ulmus |
| Hybrid parentage | 'Commelin' × '202' (U. 'Exoniensis' × U. wallichiana) |
| Cultivar | 'Stavast' |
| Origin | Netherlands |
Description
The tree is distinguished solely by its dense root system.
Pests and diseases
'Stavast' has only a moderate resistance to Dutch elm disease, rated 3 out of 5.[1]
Cultivation
'Stavast' has never been in commerce in its own right but retained as a rootstock for grafting, as its dense root system quickly stabilized young trees.[2] Nevertheless, specimens were planted in the Netherlands: in the elm trial plantation at "Lepelaarweg", Zeewolde, and in "Het Egeltjesbos" public park in Kwakel, Uithoorn. In 2018, Wijdemeren city council ‘s-Gravelandsevaartweg, Loosdrecht, planted ten.
A number of 'Stavast' trees were exported to New Zealand for use in trials at the Hortresearch station at Palmerston North in the 1990s.
Etymology
The name 'Stavast' is Dutch for "stand firmly", but is also used to describe someone of resolute character.
References
- Heybroek, H. M., Goudzwaard, L, Kaljee, H. (2009). Iep of olm, karakterboom van de Lage Landen (:Elm, a tree with character of the Low Countries). KNNV, Uitgeverij. ISBN 978-90-5011-281-9
- Heybroek, H.M. (1993). "The Dutch Elm Breeding Program". In Sticklen, Mariam B.; Sherald, James L. (eds.). Dutch Elm Disease Research. New York, USA: Springer-Verlag. pp. 16–25. ISBN 978-1-4615-6874-2. Retrieved 26 October 2017..