Content Detail

Amur corktree can be very aggressive. Look for male cultivars which do not produce the messy fruit and will not become invasive.

  • Family (English) Rue
  • Family (botanic) Rutaceae
  • Planting site Residential and parks
  • Tree or plant type Tree
  • Foliage Deciduous (seasonally loses leaves)
  • Native locale Non-native
  • Size range Medium tree (25-40 feet), Large tree (more than 40 feet)
  • Mature height 30-45 feet
  • Mature width 30-60 feet
  • Light exposure Full sun (6 hrs direct light daily)
  • Hardiness zones Zone 3, Zone 4, Zone 5 (Chicago), Zone 6, Zone 7
  • Soil preference Alkaline soil, Moist, well-drained soil
  • Tolerances Dry sites, Occasional drought, Road salt
  • Season of interest early winter, midwinter, late winter
  • Flower color and fragrance Inconspicuous
  • Shape or form Open, Round
  • Growth rate Moderate
  • Transplants well Yes
  • Planting considerations Aggressive, Messy fruit/plant parts
  • Has cultivars Yes

Native geographic location and habitat:

Amur corktree is native to China and Japan.

Bark color and texture:

On older trees, the bark becomes deeply ridged and furrowed. It is very distinctive and attractive.

Leaf or needle arrangement, size, shape, and texture:

The compound leaves are opposite, with 5 to 11 leaflets. The leaf margins are entire. Leaves are dark green in summer, changing to a clear yellow in autumn.

Flower arrangement, shape, and size:

The male and female flowers are on separate trees and are not ornamentally important.

Fruit, cone, nut, and seed descriptions:

The fruit develops only on female trees. They are small, black, berry-like drupes. They have a strong odor when crushed.

Plant care:

This tree is fairly easy to transplant due to its shallow root system. There are separate male and female trees. Select male cultivars to avoid fruit production.

 

His Majesty™ (Phellodendron amurense ‘His Majesty’): 

This cultivar is considered to be generally fruitless. Its habit is more vase-shaped. It is considered a hybrid of P. amurense and P.  sachalinense.

Macho (Phellodendron amurense ‘Macho’): 

A male (fruitless) cultivar. It has dark green leaves with a leathery texture.

Shademaster® (Phellodendron amurense ‘RNI 4551’): 

A male (fruitless) cultivar with a spreading habit.

Superfection™ (Phellodendron amurense ‘Supzam’):  

Another male (fruitless) cultivar. It has a pyramidal habit.

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