SelecTree: Tree Detail
HEPTALOBUM JAPANESE MAPLE
Acer palmatum 'Heptalobum'
Photo Locations: Morton Arboretum - Lisle, IL and Morris Arboretum - Philadelphia, PA
Utility friendly tree.
Has large green leaves that turn red in Fall.
Previously listed in the Aceraceae family.
Oval or Rounded Shape.
Has Deciduous foliage.
Height: 10 - 15 feet.
Width: 10 - 20 feet.
Growth Rate: 12 to 24 Inches per Year.
Longevity 50 to 150 years.
Leaves Palmate, Medium Green, Red, Deciduous.
Flowers Inconspicuous. Flowers in Spring. Has separate male and female flowers on the same tree (monoecious).
Winged Seed, Medium (0.50 - 1.50 inches), fruiting in Summer.
Bark Light Green or Light Gray, Furrowed or Smooth.
Shading Capacity Rated as Moderate to Dense in Leaf.
Shading Capacity Rated as Low out of Leaf.
Litter Issue is Dry Fruit.
Tree Site Conditions & Constraints
Sunset Zones 2 - 10, 12 and 14 - 24.
USDA Hardiness Zones 6 - 8.
Exposure Partial Shade to Full Shade.
Clay, Loam or Sand Texture.
Highly Acidic to Slightly Alkaline Soil pH.
Seaside Tolerance is Good in Mild Zone.
Pests & Disease Information
Susceptible to Invasive Shot Hole Borer and Aphids, Armillaria, Root Rot and Verticillium.
Health, Safety & Environmental Concerns
Branch Strength Rated as Medium.
Root Damage Potential Rated as Low.
Allergy Health Hazard.
Special Uses & Values
Cite this tree:
SelecTree. "Acer palmatum 'Heptalobum' Tree Record." 1995-2018. Dec 18, 2018.
< https://selectree.calpoly.edu/tree-detail/acer-palmatum-heptalobum >