Acer, Japanese Maple 'Red Emperor'

Acerpalmatum

Family
Sapindaceae (sap-in-DAY-see-ee)
Genus
Acer (AY-ser)
Species
palmatum (pahl-MAY-tum)
Synonym
Acer palmatum var. purpureum
Sun Exposure
Full Sun
Sun to Partial Shade
Light Shade
Foliage
Grown for foliage
Deciduous
Height
20-30 ft. (6-9 m)
Spacing
15-20 ft. (4.7-6 m)
Hardiness
USDA Zone 5b: to -26.1 °C (-15 °F)
USDA Zone 6a: to -23.3 °C (-10 °F)
USDA Zone 6b: to -20.5 °C (-5 °F)
USDA Zone 7a: to -17.7 °C (0 °F)
USDA Zone 7b: to -14.9 °C (5 °F)
USDA Zone 8a: to -12.2 °C (10 °F)
USDA Zone 8b: to -9.4 °C (15 °F)
USDA Zone 9a: to -6.6 °C (20 °F)
USDA Zone 9b: to -3.8 °C (25 °F)
Danger
N/A
Bloom Color
Red
Bloom Time
Late Spring/Early Summer
Other Details
Category
Trees
Water Requirements
Average Water Needs; Water regularly; do not overwater
Foliage Color
Burgundy/Maroon
Where to Grow
Bloom Characteristics
Bloom Size
Other details
Soil pH requirements
5.1 to 5.5 (strongly acidic)
5.6 to 6.0 (acidic)
6.1 to 6.5 (mildly acidic)
Patent Information
Non-patented
Propagation Methods
By grafting
Seed Collecting
N/A: plant does not set seed, flowers are sterile, or plants will not come true from seed
Regional

This plant is said to grow outdoors in the following regions:

Pelham, Alabama

Juneau, Alaska

Benton, Arkansas

Rogers, Arkansas

Danville, California(2 reports)

Dublin, California

GARBERVILLE, California

Long Beach, California

Denver, Colorado

Baxley, Georgia

Moscow, Idaho

Sterling, Illinois

Yorkville, Illinois

Urbandale, Iowa

East Sandwich, Massachusetts

Westford, Massachusetts

Dearborn Heights, Michigan

Brick, New Jersey

Saugerties, New York

Cincinnati, Ohio

Euclid, Ohio

Gates Mills, Ohio

Lehighton, Pennsylvania

Hilton Head Island, South Carolina

Sumter, South Carolina

Max Meadows, Virginia

Spokane, Washington

Port Edwards, Wisconsin

show all

Featured Videos

Gardener's Notes:

3
positives
1
neutral
0
negative
Sort By:
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C
| October 2022 | positive

I have this cultivar growing in zone 5b and it has been perfect so far.
Of course when first planted it would need extra water wit...Read More

J
Hilton Head, SC (Zone 9a) | October 2019 | positive

I just planted several red Japanese Maples in my zone 8b, (Hilton Head, SC) garden. Two were the traditional 'Bloodgood', which I was fam...Read More

I
Saugerties, NY | January 2010 | positive

I have had great success here in the Hudson River Valley of NY, growing and raising "Red Emperor". The summer color is splendid and the f...Read More

B
Braselton, GA (Zone 8a) | March 2007 | neutral

Acer palmatum 'Red Emperor' (Dec) (z6) (Bon)
New & deserving its royal name!, this upright 15-20'variety has crimson leaves which ...Read More

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