Photo by Melody

PlantFiles: Japanese Maple
Acer palmatum 'Twombly's Red Sentinel'

Family: Sapindaceae (sap-in-DAY-see-ee) (Info)
Genus: Acer (AY-ser) (Info)
Species: palmatum (pahl-MAY-tum) (Info)
Cultivar: Twombly's Red Sentinel

» View all varieties of Japanese Maples

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One member has or wants this plant for trade.


Unknown - Tell us

10-12 ft. (3-3.6 m)

8-10 ft. (2.4-3 m)

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)

Sun Exposure:
Sun to Partial Shade
Light Shade

Grown for foliage
Good Fall Color

Other details:
Average Water Needs; Water regularly; do not overwater
Provides winter interest

Soil pH requirements:
5.6 to 6.0 (acidic)
6.1 to 6.5 (mildly acidic)
6.6 to 7.5 (neutral)

Patent Information:
Unknown - Tell us

Propagation Methods:
From woody stem cuttings
From softwood cuttings
From semi-hardwood cuttings
From seed; stratify if sowing indoors
From seed; direct sow after last frost
By grafting
By budding

Seed Collecting:
Allow seedheads to dry on plants; remove and collect seeds

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By Osteole
Thumbnail #1 of Acer palmatum by Osteole

By Osteole
Thumbnail #2 of Acer palmatum by Osteole

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1 positive
No neutrals
No negatives

Gardeners' Notes:

Positive JinnyB On Feb 13, 2009, JinnyB from Williamsburg, VA (Zone 7a) wrote:

There is a full grown Japanese Maple out side the window where I work. It is one of the most beautiful trees I have ever seen. In the spring it is a light but brilliant green and darkens throughout the summer. By fall it has turned a soft red and holds its leaves until at least mid November. It is a wide umbrella shape and provides a large shaded area.

I dug up some small trees under the well established tree, being careful to not disturb the roots anymore then necessary. My first efforts did not do well. Later another employee there said he had planted some in a large pot and kept it in a fairly shady location outside and for the most part let Mother Nature do the watering unless we had an extended dry spell. I tried it and they are doing great. My little 4" trees are now about 3' and adding new branches, all in one summer. When they are about 6' I will transplant to a mostly sunny location as the mother tree is in full sun all day. Warning: I had to tell the man who cuts the grass not to disturb them as he thought they were "Pot"! The young trees sure do look alot like pot!

Anyone who can start them this way will save big bucks as they are very expensive to purchase. However, they are well worth the work of babying along young transplants or paying the price for a nursery plant as they are so beautiful.


This plant has been said to grow in the following regions:

Williamsburg, Virginia

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