Annual Sunflower vs Silverleaf Sunflower

Helianthus annuus compared with Helianthus argophyllus

Key Differences

• Annual Sunflower is Not Evaluated while Silverleaf Sunflower is Least Concern.

Taxonomic Classification

Rank	Annual Sunflower	Silverleaf Sunflower
Kingdom same	Plantae (พืช)	Plantae (พืช)
Phylum same	Magnoliophyta (Flowering Plants)	Magnoliophyta (Flowering Plants)
Class same	Magnoliopsida (พืชใบเลี้ยงคู่)	Magnoliopsida (พืชใบเลี้ยงคู่)
Order same	Asterales (อันดับทานตะวัน)	Asterales (อันดับทานตะวัน)
Family same	Asteraceae (Daisy Family)	Asteraceae (Daisy Family)
Genus same	Helianthus (Sunflowers)	Helianthus (Sunflowers)
Species	Helianthus annuus	Helianthus argophyllus

Evolutionary Relationship

Annual Sunflower and Silverleaf Sunflower share a common ancestor at the Genus level: Helianthus. (Sunflowers)

Conservation Status

Annual Sunflower

NE — Not Evaluated

Trend: Stable →

Silverleaf Sunflower

LC — Least Concern

Physical Characteristics

Attribute	Annual Sunflower	Silverleaf Sunflower
Diet	Autotroph	—
Average Lifespan	1 years	—
Average Length	3.0 m	—
Average Weight	—	—

Habitat & Geographic Range

Annual Sunflower

Habitat

Inhabits montane grasslands and shrublands and Mediterranean forests and woodlands within the Palearctic biogeographic realm.

Range

Widely distributed across Africa (12 countries), Asia (7 countries), Europe (30 countries), North America (Canada, United States), Oceania and the Pacific (Australia, Marshall Islands), and South America (4 countries).

Silverleaf Sunflower

Habitat

Typically found in diverse terrestrial habitats from tropical forests to temperate regions.

Range

Distributed across Australia, Japan, Mozambique, South Africa, and Tonga.

Annual Sunflower

One of the world's most cultivated flowering plants and an economically critical oilseed crop, sunflowers are native to North America and can reach 3 meters in height with flower heads up to 30 cm across. Their distinctive behavior of tracking the sun — solar heliotropism in young plants — gave them their name. A single sunflower head consists of up to 2,000 tiny individual florets. Global production exceeds 50 million tonnes annually, valued for oil, seeds, and birdfeed.

Shared Countries

Both species can be found in 3 countries:

🇦🇺 Australia 🇯🇵 Japan 🇿🇦 South Africa