Silphium Species, White-Flowered Rosinweed, Compass Plant

Silphiumalbiflorum

Family
Asteraceae (ass-ter-AY-see-ee)
Genus
Silphium (SIL-phee-um)
Species
albiflorum (al-BIH-flor-um)
Synonym
Sun Exposure
Hardiness
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)
USDA Zone 8a: to -12.2 °C (10 °F)
USDA Zone 8b: to -9.4 °C (15 °F)
USDA Zone 9a: to -6.6 °C (20 °F)
USDA Zone 9b: to -3.8 °C (25 °F)
USDA Zone 10a: to -1.1 °C (30 °F)
USDA Zone 10b: to 1.7 °C (35 °F)
Bloom Color
Bloom Time
Other Details
Water Requirements
Foliage Color
Where to Grow
Bloom Characteristics
Bloom Size
Other details
Soil pH requirements
Patent Information
Propagation Methods
Seed Collecting
Regional

This plant is said to grow outdoors in the following regions:

Austin, Texas

Dripping Springs, Texas

Eden, Texas

Fort Worth, Texas

Garland, Texas

Weatherford, Texas

Winters, Texas

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Gardener's Notes:

1
positive
0
neutral
0
negative
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M
Dripping Springs, TX | March 2017 | positive

I have it growing in a nasty spot of full day hot Texas sun on a slope of broken up rocky limestone marl and caliche with a tad of grani...Read More

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