Amur Corktree
Phellodendron amurense

Family: Rutaceae (roo-TAY-see-ee) (Info)
Genus: Phellodendron (fel-oh-DEN-dron) (Info)
Species: amurense (am-or-EN-see) (Info)

Category:

Trees

Height:

30-40 ft. (9-12 m)

Spacing:

over 40 ft. (12 m)

Hardiness:

USDA Zone 2a: to -45.5 C (-50 F)

USDA Zone 2b: to -42.7 C (-45 F)

USDA Zone 3a: to -39.9 C (-40 F)

USDA Zone 3b: to -37.2 C (-35 F)

USDA Zone 4a: to -34.4 C (-30 F)

USDA Zone 4b: to -31.6 C (-25 F)

USDA Zone 5a: to -28.8 C (-20 F)

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)

Sun Exposure:

Full Sun

Danger:

Unknown - Tell us

Bloom Color:

Chartreuse (Yellow-Green)

Bloom Time:

Late Spring/Early Summer

Foliage:

Deciduous

Other details:

May be a noxious weed or invasive

Average Water Needs; Water regularly; do not overwater

Soil pH requirements:

6.1 to 6.5 (mildly acidic)

6.6 to 7.5 (neutral)

7.6 to 7.8 (mildly alkaline)

Patent Information:

Non-patented

Propagation Methods:

From semi-hardwood cuttings

From seed; direct sow outdoors in fall

From seed; stratify if sowing indoors

From seed; sow indoors before last frost

From seed; germinate in a damp paper towel

By grafting

Seed Collecting:

Unblemished fruit must be significantly overripe before harvesting seed; clean and dry seeds

Regional

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

Hanna City, Illinois

Roslindale, Massachusetts

Saint Paul, Minnesota

Riviere A La Truite, New Brunswick

Cambridge, Wisconsin

Gardeners' Notes:

3
positives
0
neutrals
1
negative
RatingContent
Positive

On May 8, 2014, rickc304 from Niles, OH (Zone 6a) wrote:

This infrequently used, hardy tree makes an attractive specimen throughout the year. Its foliage is attractive both in summer and in fall when it turns golden. It also has unique bark and a nice form. Great for shade or as a specimen tree.

Negative

On Feb 21, 2014, coriaceous from ROSLINDALE, MA wrote:

This tree self-sows weedily where it is happy. It is an aggressive invader of natural areas here in Massachusetts, where sale, trade, transporting, or planting this species is illegal.

Positive

On Feb 2, 2006, rubyfest from Maple Grove, MN (Zone 4a) wrote:

This tree was developed by the University of MN to be hardy here.

Positive

On May 13, 2005, braun06 from Peoria Heights, IL (Zone 5b) wrote:

I had planted the cultivar 'Macho' in my yard over three years ago. It has grown ok in some years. Last year it only grew a foot while it grew three feet in one growth spurt the year before. I would say that here in Illinois it is always guaranteed to defoliate once during the summer regardless of watering often or none at all during a drought. Maybe this gets better as it establishes. *UPDATE 3-15-07* The plant established well in its third summer and no longer does it defoliate prematurely. I was lucky enough in my opinion to get an awkward formed "macho" as it now is getting quite picturesque already. It had its leader die when young before I got it and has grown quite unformally since. Id say it has grown about 1.5' -2' every growing season. I cant be more pleased with a sha... read more