Helianthus porteri SEEDS

Helianthus porteri seeds grow into Porter’s sunflower a slender annual herb native to the temperate biome of a very restricted area of the south-eastern USA (Georgia and Alabama), growing on granite outcrops and thin soils. Named after Thomas Conrad Porter (18221901), American botanist. A narrow endemic of granite outcrops the thin, rocky, metal-enriched soils of Appalachian granite outcrops support an extraordinary community of endemic plant species, and Porter’s sunflower is one of these specialists. Produces slender-stemmed plants to 1 m with typical small yellow sunflower heads. Family Asteraceae.

Full sun; very well-drained, thin soils; warm temperate conditions; annual. Rare granite outcrop endemic.

• Named after T.C. Porter (18221901, American botanist); granite outcrop specialist; rare endemic
• Georgia and Alabama only; thin rocky metal-enriched granite soils; slender to 1 m; annual
• SE USA (Georgia, Alabama) temperate biome; rare granite outcrop endemic
• Genus Helianthus ~70 species; Family Asteraceae
• Full sun; thin rocky soils; warm temperate; annual; rare endemic; Family Asteraceae

Helianthus porteri is Porter’s sunflower a rare endemic of the granite outcrops of Georgia and Alabama where specialist plant communities adapted to thin, rocky soils create biodiversity hotspots unique to this extraordinary geological landscape of the south-eastern USA.

IMPORTANT: Pictures show the adult plant, which is not for sale. The offer is only for seeds.