Wednesday, January 15, 2020

List Of Weeping Tree Forms



The following is a list of currently 26 species of landscape trees which lists one or more weeping cultivars. over time, more tree genera will be added:
Weeping willow (Salix)

  • Weeping Japanese Maples (Acer palmatum) –‘Ryusen’, 'Matsukake', 'Omuyarama' and 'Green Cascade' among others
  • Weeping river birch (Betula nigra ‘Summer Cascade™’)
  • Weeping birch (Betula pendula) 'Youngii’, 'Dalecarlica', 'Golden Cloud', 'Gracilis', 'Laciniata', 'Purpurea')
  • Weeping katsura tree (Cercidiphyllum japonicum) 'Pendula', 'Tidal Wave', 'Amazing Grace'
  • Weeping redbud (Cercis canadensis) ‘Traveller’, ‘Ruby Falls’, Lavender Twist® (‘Covey’), ‘Whitewater'
  • Weeping Blue Atlas cedar (Cedrus atlantica) ‘Pendula’


Weeping mulberry (Morus)
  • Weeping Himalayan cedar (Cedrus deodara ‘Pendula’)
  • Weeping beech (Fagus sylvatica 'Pendula', 'Atropunicea', 'Atropurpurea', ‘Purpurea Pendula’
  • Weeping Japanese Larch (Larix kaempferi 'Pendula')
  • Weeping crabapple (Malus x ) ‘Red Jade’, 'Louisa', 'Luwick', Molten Lava™ (‘Molazam’), 'Royal Fountain', several others
  • Weeping white mulberry (Morus alba ‘Pendula’ (female clone –sets fruits); 'Chaparral’ (male clone – no fruits)
  • Weeping blackgum (Nyssa sylvatica) ‘Autumn Cascade’
  • Weeping Norway spruce (Picea abies ‘Pendula’)
  • Weeping Serbian spruce (Picea omorika ‘Pendula)
  • Weeping white pine (Pinus strobus ‘Pendula)
  • Weeping Flowering Apricot (Prunus mume 'Pendula')
  • Weeping cherries (Prunus serrulata 'Kiku-shidare-zakura')
  • Weeping Higan cherry (Prunus subhirtella 'Pendula', 'Pendula Alba', and 'Pendula Rubra')
  • Yoshino cherry (Prunus x yedoensis ‘Snow Fountains’)
  • Weeping willow (Salix spp.) – many weeping cultivars; Contorted leaf willow (Salix matsudana 'Tortuosa')
  • Weeping Japanese snowbell (Styrax japonicus) ‘Fragrant Fountains’, ‘Marley’s Pink Parasol® (‘JL Weeping’); Carillon’
  • Japanese Pagoda Tree (Styphnolobium japonicum 'Pendula')
  • Bald cypress (Taxodium distichum) – ‘Cascade Falls’, ‘Falling Waters’ (both grafted shrub forms that may be trained into small weeping tree forms)
  • Little leaf linden (Tilia cordata) - 'Pendula Nana' and 'Girard's Pendula Nana' (both are dwarf forms)
  • Weeping Silver Linden (Tilia petiolaris ‘Pendula
  • Canadian hemlock (Tsuga canadensis) ‘Pendula’ –several weeping shrub forms
  • Camperdown elm (Ulmus glabra 'Camperdownii')
  • Weeping Alaskan cedar (Xanthocyparis nootkatensis 'Pendula', ‘Jubilee’, ‘Strict Weeping’)

Wednesday, January 1, 2020

New Osage Orange Trees Are Gamechangers

Osage Orange replaced with thornless, fruitless varieties
Osage orange (Maclura pomifera) has been declawed and neutered (USDA Zones 5-9). A member of the mulberry family (Moraceae), this tough prairie tree species is native to south Central states. The medium-sized 35-40 foot tree grows fast @ 2 ½ to 3 feet per year. It is also called Bois D’Arc (pronounced “bow-dark”).

‘Wichita’ and ‘White Shield’ are fruitless and thornless (male) selections. Both cultivars develop into attractive landscape trees with deep green shiny foliage that turns a beautiful fall pale to golden yellow in fall. ‘Wichita’ grows slightly taller than ‘White Shield’, and its branching is slightly more upright.  ‘White Shield’ forms a rounded canopy, averaging 35 feet in height and spread.  Mostly inconspicuous tiny green flower clusters appear in late spring.

Osage orange, aka "hedge apple" is a dioecious species. Male trees make effective landscape shade trees. Female trees are generally not recommended for landscape use because their fruits pose a considerable litter problem. Mature tree bark is deeply fissured, with an orange-brown inner wood peeking through. In the early years, pruning helps to develop a well-branched tree.

Hedge apples, i.e. large 4-6 inch wide yellowish green fruit, weigh 2 to 3 pounds each. Fruits on female trees fall from the tree in October and are a huge maintenance headache. Female trees need a male tree pollinator in order to produce fruit.

Fierce ½- inch long thorns, hidden within the dense branches, can do lots of harm, even puncture a vehicle tire. The tree’s wood is hard and does not split easily.

Osage orange is easily grown in average, dry to medium, well-drained soils in full sun to part shade. The tree grows almost anywhere, in poor infertile, acid or alkaline soils, and dry or wet fields. It also tolerates drought, heat, cold and wind. Disease and pest problems are practically non-existent. Its foliage is tolerant of urban air pollutants.

Both cultivars are good choices planted on large residential or commercial properties, city parks, and golf courses. Also, plant under high power lines or utilize as a deciduous windbreak.