Magnolia Galaxy The Galaxy is arguably one of the most glamourous of all the Magnolia trees. The beautifully perfumed pink flowers blossom from deep red-purple buds. The Galaxy has a long flowering period, blooming from an early age and generally avoiding most frosts. A popular and well-known variety, this magnolia definitely earns its RHS AGM. As it matures the Magnolia Galaxy forms an upright, pyramid-shaped tree with ascending branches, making for a magical spring focal point, even in smaller gardens. Height: 10m (33'). Spread: 8m (26').