Heartnut, Japanese Walnut
Juglanscordiformis

Family: Juglandaceae (joo-glan-DAY-see-ee)
Genus: Juglans (JOO-glanz)
Species: cordiformis (kord-ih-FOR-miss)

Synonym:Juglans ailantifolia var. cordiformis

Category
Edible Fruits and Nuts
Trees

Water Requirements
Average Water Needs; Water regularly; do not overwater

Sun Exposure
Full Sun

Foliage
Grown for foliage
Deciduous
Shiny/Glossy

Foliage Color

Height
20-30 ft. (6-9 m)
30-40 ft. (9-12 m)
over 40 ft. (12 m)

Spacing
30-40 ft. (9-12 m)

Hardiness
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)

Where to Grow

Danger
Parts of plant are poisonous if ingested
Handling plant may cause skin irritation or allergic reaction

Bloom Color
Green

Bloom Characteristics

Bloom Size

Bloom Time
Late Spring/Early Summer

Other details

Soil pH requirements
6.1 to 6.5 (mildly acidic)

Patent Information

Propagation Methods
From seed; direct sow outdoors in fall

Seed Collecting
Remove fleshy coating on seeds before storing
Wear gloves to protect hands when handling seeds