This map shows the overall suitability of this crop in the state of Illinois.
Overall Suitability Map
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Juglans regia

Common Name(s): English walnut; Persian walnut
Family: Juglandaceae
Growth Habit: Perennial
Growing Days: 150 to 190 (days)
Abs.Max=104° (F)    Opt.Max=86° (F)
Opt.Min=59° (F)    Abs.Min=45° (F)
Precipitation: 31 to 67 (in.)
Winter Minimum: -11° (F)
Soil pH: 5.5 to 7.5
Soil Texture/Type: Medium textured soils
Soil Drainage: Well
Photoperiod Response: Long day
Light Intensity: Bright
Requires 2,300 GDD (50 F). Prefers deep well drained soils of high fertility. No salt tolerance. Frost susceptible.
Phytothora, Rhizoctonia, Cercospora, Powdery Mildew
Environ. - ornamental, Material - wood, Food - nut
Temperate, steppe and semi-arid, subtropical-dry summer
Geographical Origin:
Soviet Middle Asia, Western Asia, Southeastern Europe, Caucasus, Indian Subcontinent
Metric Units

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Last Modified: October 17, 2012
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