This map shows the overall suitability of this crop in the state of Illinois.
Overall Suitability Map
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Cucurbita pepo subsp. ovifera var. ovifera

Common Name(s): Acorn squash; ornamental gourd; summer crookneck squash; straightneck squash
Family: Cucurbitaceae
Growth Habit: Annual
Growing Days: 40 to 100 (days)
Abs.Max=104° (F)    Opt.Max=86° (F)
Opt.Min=66° (F)    Abs.Min=46° (F)
Precipitation: 24 to 59 (in.)
Winter Minimum:
Soil pH: 5.5 to 7.5
Soil Texture/Type: Medium textured
Soil Drainage: Well
Photoperiod Response: Long day, short day and day neutral
Light Intensity: Bright to clear
No frost tolerance. Sensitive to saline conditions. Favors warm, but not hot temps.
Pythium, Phytothora, Rhizoctonia, Anthrachose, Powdery Mildew
Environ. - ornamental, Food - fruit


Geographical Origin:
Only cultivated

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Last Modified: October 17, 2012
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