Spectrum is an American hybrid Magnolia, featuring particularly large deep pink flowers. It grows with an upright conical habit.
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Spectrum was raised at the US National Arboretum in the 1960s. It is a cross between Magnolia liliiflora 'Nigra' and Magnolia sprengeri 'Diva' and is a sister of Magnolia 'Galaxy'. The main differences are that Spectrum has fewer but larger flowers.