Magnolia 'Spectrum'

Botanical Information

FamilyMagnoliaceae
GenusMagnolia
Cultivar'Spectrum'
CategoryWoody
TypeShrub (deciduous)
OriginSpectrum is a magnolia hybrid from 1963. It was bred by W.Kosar from the US National Arboretum as a cross between Magnolia liliiflora 'Nigra' and Magnolia sprengeri ‘Diva’.

Details

USDA Hardiness Zone4 - 9
USDA Hardiness Ref.
Canadian Hardiness Zone5 - 8
Canada Hardiness Ref.
RHS Hardiness ZoneH6
RHS Hardiness Ref.
Temperature (°C)-30
Temperature (°F)-20
Height6-8 m
Spread4-8 m
GrowthMedium
Flowering PeriodApril, May

Description and Growing Information

ShapeSymmetrical, like a cone with rounded base.
LandscapePopular as a landscape feature when in bloom but otherwise having the character of a small tree and thus suitable for landscapes with limited space. Structural pruning will enhance the form and help to produce a more open specimen.
PropagationBy softwood cuttings in spring or early summer, or semi-ripe cuttings in late summer and autumn.
CultivationGrow in moist, well-drained, preferably acidic to neutral soil in sun or partial shade.
Pestsacterial leaf spot, spot anthracnose, canker, dieback, butt rot, powdery mildew, anthracnose, fungal spots, weevils, snails, scale insects, thrips, planthoppers.
Notable SpecimensCaerhays Castle, Goran, Cornwall, United Kingdom.
Leaf DescriptionLarge, deep green, ovate, deciduous.
Flower DescriptionFragrant flowers that are rich purple pink outside and almost white inside.

Photographs