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

Common Name(s): Digitalis; Greek foxglove
Family: Scrophulariaceae
Growth Habit: Biennial
Growing Days: 100 to 210 (days)
Abs.Max=86° (F)    Opt.Max=79° (F)
Opt.Min=64° (F)    Abs.Min=45° (F)
Precipitation: 18 to 26 (in.)
Winter Minimum: 23° (F)
Soil pH: 6.5 to 7.5
Soil Texture/Type: Medium, light
Soil Drainage: Excessive
Photoperiod Response: Long day, short day and day neutral
Light Intensity: Very bright
Requires good drainage. Firm, dry clay, light drift sand and too-humid soils are absolutely unusable. Source of acetyldigoxin, deslanoside, digoxin and lanatosides A,B,C. Slow germination. More than 650 mm Rain will deter growth and medicinal production.
Environ. - ornamental, Medicinal - , Poison - mammals
Steppe and semi-arid, subtropical-dry summer, temperate
Geographical Origin:
Western Asia, Eastern Europe, Mid Europe, Southeastern Europe
Metric Units

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Last Modified: October 17, 2012
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