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This map shows the overall suitability of this crop in the state of Illinois.
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Juglans regia
Synonyms:

Common Name(s): English walnut; Persian walnut
Family: Juglandaceae
Growth Habit: Perennial
Invasiveness:
Growing Days: 150 to 190 (days)
Temperature:
Abs.Max=40° (C)    Opt.Max=30° (C)
Opt.Min=15° (C)    Abs.Min=7° (C)
Precipitation: 80 to 170 (cm.)
Winter Minimum: -24° (C)
Soil pH: 5.5 to 7.5
Soil Texture/Type: Medium textured soils
Soil Drainage: Well
Photoperiod Response: Long day
Light Intensity: Bright
Comments:
Requires 2,300 GDD (50 F). Prefers deep well drained soils of high fertility. No salt tolerance. Frost susceptible.
Diseases:
Phytothora, Rhizoctonia, Cercospora, Powdery Mildew
Uses:
Environ. - ornamental, Material - wood, Food - nut
Woodiness:
Tree
Climate:
Temperate, steppe and semi-arid, subtropical-dry summer
Geographical Origin:
Soviet Middle Asia, Western Asia, Southeastern Europe, Caucasus, Indian Subcontinent
 
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Last Modified: March 15, 2021
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