SelecTree: Tree Detail
SAMUEL SOMMER SOUTHERN MAGNOLIA
Magnolia grandiflora 'Samuel Sommer'
Photo Locations: Los Angeles County Arboretum - Arcadia, CA, Strybing Arboretum, San Francisco, CA and The National Arboretum - Washington, DC
Blooms at a young age.
Has fragrant Flower.
Native to Southeastern United States.
Additional Common Names
SAMUEL SOMMER SOUTHERN MAGNOLIA, BULL BAY
Erect or Spreading and requires ample growing space.
Oval or Rounded Shape.
Has Evergreen foliage.
Height: 30 - 40 feet.
Width: 20 - 30 feet.
Growth Rate: 24 Inches per Year.
Longevity 50 to 150 years.
Leaves Elliptic to Ovate, Glossy Dark Green, Bronze or Red, No Change, Evergreen.
Flowers Showy. Fragrant White. Flowers in Spring, Summer or Fall. Has perfect flowers (male and female parts in each flower).
Prolific, Brown or Purple Follicle, Very Large (Over 3.00 inches), fruiting in Summer or Fall.
Bark Light Green, Fissured.
Shading Capacity Rated as Dense to Very Dense in Leaf.
Litter Issue is Flowers, Dry Fruit and Leaves.
Tree Site Conditions & Constraints
Sunset Zones 4 - 12 and 14 - 24.
USDA Hardiness Zones 7 - 10.
Exposure Full Sun to Partial Shade.
Clay, Loam or Sand Texture.
Highly Acidic to Slightly Alkaline Soil pH.
Salinity Tolerance is Moderate on Coast.
Seaside Tolerance is Good in Mild Zone.
Pests & Disease Information
Resistant to Oak Root Fungus. Susceptible to Aphids, Scales and Spider Mites, Root Rot and Verticillium.
Health, Safety & Environmental Concerns
Branch Strength Rated as Medium.
Root Damage Potential Rated as Moderate.
None Known Health Hazard.
Special Uses & Values
Cite this tree:
SelecTree. "Magnolia grandiflora 'Samuel Sommer' Tree Record." 1995-2018. Apr 20, 2018.
< https://selectree.calpoly.edu/tree-detail/magnolia-grandiflora-samuel-sommer >
SelecTree Nursery Connection Map
Cal Poly / ESRI