Magnolia Cultivars N–O

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Credits

Julian Sutton (2022)

Recommended citation
Sutton, J. (2022), 'Magnolia Cultivars N–O' from the website Trees and Shrubs Online (treesandshrubsonline.org/articles/magnolia/magnolia-cultivars-n-o/). Accessed 2022-06-28.

Genus

Other taxa in genus

Glossary

Credits

Julian Sutton (2022)

Recommended citation
Sutton, J. (2022), 'Magnolia Cultivars N–O' from the website Trees and Shrubs Online (treesandshrubsonline.org/articles/magnolia/magnolia-cultivars-n-o/). Accessed 2022-06-28.

Our primary references for cultivar information are Jim Gardiner’s (2000) ‘Magnolias: a Gardener’s Guide’ and Matt Lobdell’s (2021) register of cultivars for Magnolia Society International. Further references are cited where relevant. Other important accounts of cultivars include Dorothy Callaway’s (1994) ‘The World of Magnolias’ and (in German) Beet Heerdegen and Reto Eisenhut’s (2020) ‘Magnolien und Tulpenbäume: Magnoliaceae’. Magnolia Society International’s journal ‘Magnolia’ is an ongoing trove of information.


'Nannetensis'

See Magnolia grandiflora ‘Nannetensis’.


'NCMX1'

(M. × loebneri 'Encore') × (M. × soulangeana 'Alexandrina')

Synonyms / alternative names
Magnolia MERCURY®

RHS Hardiness Rating: H6

USDA Hardiness Zone: 5-9

Flowers just before the new leaves (late April to May in North Carolina), open, with reflexing tepals, to 30 cm across, red-purple outside, pink inside, fragrant. Selected for hardiness and late flowering, a relatively narrow, pyramidal and strongly upright small tree. Raised before 2005, the result of a collaboration between Tom Ranney of North Carolina State University, J. Frank Schmidt and Son Nursery, and August Kehr (Schmidt 2022; Lynch 2018). US Plant Patent 29218 granted 2018.


'Neil McEacharn'

See Magnolia × loebneri ‘Neil McEacharn’.


'Nigra'

See Magnolia liliiflora ‘Nigra’.


'Nimbus'

M. obovata × M. virginiana

RHS Hardiness Rating: H6

USDA Hardiness Zone: 6-9

Semi-evergreen intersectional hybrid. Flowers cup-shaped, very fragrant, late spring to early summer; tepals 11, outer 3 green and sepaloid, the remainder creamy white, to 10 cm long and strongly concave; sterile. A small, upright tree with leaves glossy green above, glaucous beneath. From a controlled cross made by William Kosar, US National Arboretum, in 1956. Highlighting its fragrance, Philippe de Spoelberch considers it ‘a must’ for a list of recommended cultivars, although he does not find it easy to grow in Belgium (pers. comm. 2021).


'Norbertii'

See Magnolia × soulangeana ‘Norbertii’.


'Norman Gould'

See Magnolia kobus ‘Norman Gould’.


'Old Port'

See Magnolia × soulangeana ‘Old Port’.


'Olivia'

M. acuminata 'Miss Honeybee' × M. 'Gold Crown'

RHS Hardiness Rating: H6

USDA Hardiness Zone: 6-9

Flowers large, erect, tulip-shaped, rich yellow, appearing with or just before the new leaves. A narrowly upright small tree. Sister to the smaller flowered ‘Daphne’, from a cross made by August Kehr, 1991; grown at Arboretum Wespelaar, selected by Philippe de Spoelberch.


'Olmenhof'

See Magnolia × thomsoniana ‘Olmenhof’.


'O'Neill'

See Magnolia liliiflora ‘O’Neill’.


'Orchid'

M. liliiflora × M. stellata

Synonyms / alternative names
Magnolia liliiflora 'Orchid'
Magnolia × soulangeana 'Orchid'

RHS Hardiness Rating: H6

USDA Hardiness Zone: 5-9

Flowers precocious, late (late April to May in S England), resembling M. liliiflora in shape; tepals ~6, to 17.5 cm long, uniform red-purple, showy. A medium shrub, found as a chance seedling at Hillenmeyer Nurseries, KY, in 1961.


'Oyama Rose'

M. sieboldii 'Colossus' × M. insignis 'Anita Figlar'

Evergreen in mild areas, more usually deciduous. Flowers with the new leaves in May or June, fragrant, generally resembling those of M. sieboldii but with the outer two whorls of tepals pink, and facing upward or outward rather than nodding. A medium shrub, hardiness outside the American Southeast not yet fully tested. This Dennis Ledvina intersectional hybrid was grown and selected by Dick Figlar, SC, before 2016.