Magnolia Cultivars J

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Credits

Julian Sutton (2022)

Recommended citation
Sutton, J. (2022), 'Magnolia Cultivars J' from the website Trees and Shrubs Online (treesandshrubsonline.org/articles/magnolia/magnolia-cultivars-j/). Accessed 2022-06-27.

Genus

Other taxa in genus

Glossary

Credits

Julian Sutton (2022)

Recommended citation
Sutton, J. (2022), 'Magnolia Cultivars J' from the website Trees and Shrubs Online (treesandshrubsonline.org/articles/magnolia/magnolia-cultivars-j/). Accessed 2022-06-27.

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.


'J.C. Williams'

M. sprengeri 'Diva' × ​​​​​​​ M. sargentiana var. robusta

RHS Hardiness Rating: H5

USDA Hardiness Zone: 7-9

Flowers precocious, to 15 cm across, reddish purple, a very similar colour to M. campbellii ‘Lanarth’. A large shrub or small tree raised by Phillip Tregunna, head gardener at Caerhays Castle, Cornwall; registered 1997 by F. Julian Williams, named for his grandfather, who was responsible for planting the Caerhays garden (Edwards & Marshall 2019). Highly rated by Philippe de Spoelberch, Belgium (pers. comm. 2021).


'Jack Fogg'

See Magnolia × foggii ‘Jack Fogg’.


'Janaki Ammal'

See Magnolia kobus ‘Janaki Ammal’.


'Jane'

M. liliiflora 'Reflorescens' × M. stellata 'Waterlily'

RHS Hardiness Rating: H6

USDA Hardiness Zone: 4-8

Flowers erect, precocious but late, to 10 cm across, red-purple outside, white inside, fragrant and beautifully shaped; tepals 8–10. A vigorous medium to large shrub, usually upright, sometimes tree like. A de Vos & Kosar hybrid raised at the US National Arboretum before 1968; named for Jane Freeman, wife of then US Secretary of Agriculture Orville Freeman.


'Jane Platt'

See Magnolia stellata ‘Jane Platt’.


'Janet'

M. 'Pegasus' × M. campbellii 'Darjeeling'

RHS Hardiness Rating: H5

USDA Hardiness Zone: 7-9

Flowers precocious, opening widely to 20 cm across; tepals clean pink (no hint of purple); a small to medium tree raised from a deliberate cross in John Gallagher’s Dorset garden before 2014. Along with ‘Peter Dummer’ of the same parentage, Williams, Gardiner & Gallagher (2016) include it in their selection of up-and-coming magnolias, noting that the ‘delicate mixture of white outer tepals blushed pink, and central pink tepals makes one stop and think how different this variety is to, say, Magnolia ‘Caerhays Belle”.


'Jermyns'

See Magnolia salicifolia ‘Jermyns’.


'Jersey Belle'

M. sinensis × M. wilsonii

RHS Hardiness Rating: H6

USDA Hardiness Zone: 6-8

Flowers with the leaves in late spring to early summer, large (15–20 cm across), nodding, with red anthers. A large, spreading shrub raised from seed of M. sinensis before 1981 by Violet Lort-Phillips, LaColline Garden, Jersey (Fogg & Del Tredici 1984). After some initial confusion with M. wilsonii ‘Highdownensis’, Flinck & Spongberg (1989) recognised its hybrid origin, citing habit and leaf shape closer to M. wilsonii, but crinkled hairs on the leaf undersides resembling M. sinensis.


'Jim Gardiner'

Flowers precocious, late March to early April (S England), pale pink, ‘double’ with ~20 incurved inner tepals surrounded by a ring of eight. The original, a small pyramidal tree, has been growing in a rather poorly drained site on the north side of the house at Borde Hill, West Sussex, for over 50 years, but its origins are unknown (J. Gardiner, pers. comm. 2022). Although the Register of Magnolia Cultivars (Lobdell 2021) suggests that its parentage is uncertain, possibly even a hybrid of M. campbellii, Jim Gardiner’s view is that it belongs to M. campbellii Mollicomata Group. It was named by Eleni Stephenson Clarke in 2014 for the well-known British magnolia specialist Jim Gardiner VMH, Royal Horticultural Society Vice President and former Curator of RHS Garden Wisley, in recognition of his long service as an advisor at Borde Hill.


'Jim Wilson'

See Magnolia virginiana ‘Jim Wilson’.


'Joe McDaniel'

(M. × veitchii) × (M. × soulangeana 'Rustica Rubra')

RHS Hardiness Rating: H5

USDA Hardiness Zone: 7-9

Flowers precocious, initially tulip-shaped, opening out bowl-shaped to 20 cm across, deep red-purple outside, inside contrastingly paler, almost white. A small upright tree. Gresham hybrid selected by Ken Durio, LA, before 1984, at the time the darkest purple of the Greshams (Fogg & Del Tredici 1984). Professor Joe McDaniel (University of Illinois) was a leading 20th century expert in cultivated magnolias, and introduced many new cultivars across a range of woody plant genera.


'John Bond'

probably hybrid of M. cylindrica

RHS Hardiness Rating: H6

USDA Hardiness Zone: 6-9

Flowers precocious, mid-April in S England, cup-and-saucer-shaped to 23 cm across, pure white. A small, multistemmed tree selected by John Bond at the Savill Garden, Windsor; named and registered 2001 by Timothy Whiteley (Callaway 2001; Frank P Matthews 2022).


'Joli Pompon'

M. sprengeri var. sprengeri × M. 'David Clulow'

Synonyms / alternative names
Magnolia 'Joli Pompom'

RHS Hardiness Rating: H5

USDA Hardiness Zone: 7-9

Flowers precocious, April in Belgium and England; about 12 pure white tepals, with a mass of much smaller soft pink staminodes: a most unusual and attractive flower (Bluebell Arboretum and Nursery 2022). A small tree selected by Philippe de Spoelberch, Belgium before 2018 and rated highly by him (pers. comm. 2021).


'Jon Jon'

RHS Hardiness Rating: H6

USDA Hardiness Zone: 6-8

Flowers precocious but late, goblet-shaped, later opening saucer-shaped to 30 cm across, white with a basal purple flush outside. A small upright tree flowering late enough usually to avoid frost damage in N Florida (Knox 2011); this is a particular problem with Gresham hybrids in the American Southeast (M. Lobdell, pers. comm. 2022). Selected in the 1980s from the Gresham hybrids at Gloster Arboretum, MS, by John Allen Smith; parentage unknown, but flow cytometry data are compatible with the classic Gresham crosses (M. × veitchii) × (M. × soulangeana cvV.) (Parris et al. 2010).


'Judy'

M. liliiflora 'Nigra' × M. stellata 'Rosea'

RHS Hardiness Rating: H6

USDA Hardiness Zone: 4-8

Flowers erect, precocious and early, to 7.5 cm across, red-purple outside, creamy white inside; tepals 10. A relatively slow growing, medium to large shrub of upright habit. A de Vos & Kosar hybrid raised at the US National Arboretum before 1968; named for one of Francis de Vos’ daughters.


'Judy Zuk'

M. acuminata × (M. acuminata × (M. liliiflora × M. stellata))

RHS Hardiness Rating: H6

USDA Hardiness Zone: 5-9

Flowers with or just before the new leaves (April in S England), erect, tulip-shaped, fragrant; tepals orange-yellow outside with a purple basal flash, golden yellow inside. An upright small tree, becoming round-headed. From a cross made at Brooklyn Botanic Garden in 1980. Judith Zuk, director of the Scott Arboretum, PA, later of Brooklyn Botanic (whose revival she led) confessed to an ‘uncommon weakness for magnolias’ (Martin 2007). Starred as worthwhile by Philippe de Spoelberch, Belgium (pers. comm. 2021).


'Jurmag1'

M. 'Vulcan' × M. 'Iolanthe'

Synonyms / alternative names
Magnolia BLACK TULIP

RHS Hardiness Rating: H5

USDA Hardiness Zone: 7-9

Flowers precocious, cup-shaped to 15 cm across; very dark purple, thick-textured and wind-resistant. A compact small tree, suitable for smaller gardens. Raised by Mark Jury, New Zealand; introduced 1998, protected by New Zealand and European plant breeder’s rights (Jury 2017; Jury & Jury 2021). Highly rated by Philippe de Spoelberch, Belgium (pers. comm. 2021).


'Jurmag2'

M. 'Atlas' × M. 'Vulcan'

Synonyms / alternative names
Magnolia FELIX JURY

RHS Hardiness Rating: H5

USDA Hardiness Zone: 7-9

Flowers precocious, cup-and-saucer-shaped, very large to 35 cm across, red ageing rosy pink. A vigorous, small (potentially medium) tree, flowering from a young age. Raised by Mark Jury, New Zealand, named for his father, breeder of both this cultivar’s parents; introduced 2000, protected by New Zealand and European plant breeder’s rights (Jury 2017; Jury & Jury 2021). From a British perspective, Edwards & Marshall (2019) rate it ‘perhaps the finest’ Jury Magnolia, but even the raiser admits that it is less red away from New Zealand, ‘more an over-sized pink flamingo so far in European gardens’ (Jury & Jury 2021).


'Jurmag4'

M. liliiflora 'Nigra' × M. 'Vulcan'

Synonyms / alternative names
Magnolia BURGUNDY STAR™

RHS Hardiness Rating: H6

USDA Hardiness Zone: 6-9

Flowers precocious, over several weeks from late March in S England, initially tulip-shaped, later opening out to 25 cm across, wine-red, slightly fragrant. A vigorous, notably narrow shrub or small tree, flowering from a young age and rather hardier than most other Jury Magnolias. Raised by Mark Jury, New Zealand, introduced 2006, protected by New Zealand and European plant breeder’s rights (Jury 2017; Jury & Jury 2021; Edwards & Marshall 2019).


'Jurmag5'

(M. × brooklynensis 'Yellow Bird') × M. 'Iolanthe'

Synonyms / alternative names
Magnolia HONEY TULIP™

RHS Hardiness Rating: H5

USDA Hardiness Zone: 7-9

Flowers precocious, late March to April in S England, goblet shaped to 15 cm across, honey- or toffee-yellow, even in later flowers; tepals of good substance. Upright small tree of complex parentage, with five species in its genetic background: MM. acuminata, campbellii, denudata, liliiflora and sargentiana. Introduced 2013 by Mark Jury, New Zealand (Jury 2017; Jury & Jury 2021; Edwards & Marshall 2019).


'Just Jean'

See Magnolia × soulangeana ‘Just Jean’.