Ulmus × hollandica
Common name: 
Dutch Elm
Holland Elm
Hybrid Elm
Pronunciation: 
UL-mus hol-LAN-di-ka
Family: 
Ulmaceae
Genus: 
Ulmus
Type: 
Broadleaf
Native to (or naturalized in) Oregon: 
No
  • Deciduous tree, a collection of hybrids of U. minor (syn. U. carpinifolia, U. procera) × U. glabra, and possibly others.  Often the some 20 or so cultivars in this group look intermediate between the parent species, although selections may range in habit from tall, narrow or broad, to globose dwarf forms.  Jacobson (1996) describes them as having hairless or sparsely hairy twigs, leaf undersides have inconspicuous to moderately obvious hair tufts, and vein pairs number (13)14-17(21).  Some consider Ulmus × hollandica ‘Hollandica’ as the "type" cultivar of the cross.  It is known as the Dutch Elm or Holland Elm in England and the English Elm in Holland, it originated in 1680 (Jacobson, 1996).
  • Sun.  Many are susceptible to Dutch Elm Disease (DED) but some are listed as resistant.
  • Hardy to USDA Zone (4)5
  • Only a few of the cultivars of this hybrid are available in the U.S., they include:
    • ‘Jacqueline Hillier’  (syn. U. elegantissima ‘Jacqueline Hillier’)  -  a slow growing rounded, densely branched shrub that grows to a height and width of about 8 ft (2.5 m).  Can be grown in a container and as a bonsai.
    • ‘Pioneer’  -  hybridized in 1971, released by the USDA, highly resistant to DED, crown densely round to oval, fast growing.
    • ‘Vegeta’  [Huntingdon Elm]  -  tall, with a short trunk that is usually forked, leaves light green, 7.5-15 cm long.  May be the most popular older clone of U. × hollandica sold in North America (Jacobson, 1996).
    • ‘Wredei’  [Golden Elm]  -  originated in Germany about 1875.  Narrow pyramidal crown, to 60 ft (18 m), leaves bright gold, shiny, small but wide.
  • Oregon State Univ. campus: the "Elm Walk" on lower campus, between 11th and 15th St., cultivar unknown.

 

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  • flowers

    flowers

  • fruiting plant habit and fruit (seeds)

    fruiting plant habit and fruit (seeds)

  • fruit (seeds), comparison

    fruit (seeds), comparison

  • tree row, summer

    tree row, summer

  • plant habit, summer and fall

    plant habit, summer and fall

  • leaves

    leaves

  • leaf

    leaf

  • leaf, underside

    leaf, underside

  • leaves, comparison

    leaves, comparison

  • margin, comparison

    margin, comparison

  • tree row, fall

    tree row, fall

  • leaves, fall

    leaves, fall

  • tree row, fall

    tree row, fall

  • tree row at leaf drop

    tree row at leaf drop

  • tree row, late fall

    tree row, late fall

  • plant habit, winter

    plant habit, winter

  • trunk, bark

    trunk, bark

  • winter twig and buds

    winter twig and buds

  • winter twig and buds, comparison

    winter twig and buds, comparison