Rayless Sunflower

Helianthus radula

Rayless Sunflower

(c) Lauren McLaurin, some rights reserved (CC BY)

Taxonomy

Division:
Magnoliophyta | - Flowering plants
Family:
Asteraceae
Genus:
Helianthus
Species:
Helianthus radula

Growth Characteristics

Life Cycle:
Perennial
Growth Habit:
Forb/herb
Height:
3-4 ft
Light Requirements:
Full Sun
Drought Tolerance:
High
Bloom Months:
sep, oct, nov
Bloom Colors:
Yellow, Purple, Brown

Native Range

United States: Alabama, Florida, Georgia, Louisiana, Mississippi, South Carolina

Keystone Species Ranking

Caterpillar Keystone:
★★☆☆☆ Based on number of butterfly and moth species using this genus as host plant (Source: National Wildlife Federation)
Bee Keystone:
★☆☆☆☆ Based on number of native bee species using this genus for pollen and nectar (Source: National Wildlife Federation)

Soil Requirements

Soil Type:
sandy, acidic, nutrient-poor soil
pH:
5.5 - 7.0 (slightly acidic to neutral)
Drainage:
excellent drainage required
Moisture:
dry to moderate
Notes:
native to dry, open habitats like pine flatwoods