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Description
Helianthus Argophyllus, also known as Silverleaf Sunflower, is a perennial plant that belongs to the Asteraceae family. The plant is native to the southern United States and can grow up to 6 feet tall. The plant produces large, yellow flowers that bloom from June to August.
Taxonomic Information
| Domain | Eukaryota |
|---|---|
| Kingdom | Plantae |
| Phylum | Spermatophyta |
| Class | Magnoliopsida |
| Order | Asterales |
| Family | Asteraceae |
| Genus | Helianthus |
| Species | Argophyllus |
Appearance
The Silverleaf Sunflower has long, slender leaves with a silvery-white color that gives it its name. The leaves are oblong in shape and can grow up to 7 inches long. The plant produces large, yellow flowers that can be up to 4 inches in diameter. The flowers have a brown center and multiple petals that surround it. The plant can grow up to 6 feet tall and 3 feet wide.
Care Guide
Helianthus Argophyllus requires well-draining soil and full sun exposure. It can tolerate a range of soil types, but prefers sandy or loamy soil. The plant requires regular watering, especially during dry spells. Fertilize the plant with a balanced fertilizer in the spring and summer. The plant can tolerate temperatures down to -10°C and is hardy in USDA zones 7-10.
Common Pests & Diseases
Helianthus Argophyllus is susceptible to powdery mildew, rust, and leaf spot diseases. These diseases can be prevented by ensuring proper air circulation around the plant and avoiding overhead watering. The plant may also be attacked by aphids, caterpillars, and spider mites. These pests can be controlled with insecticidal soap or neem oil.
Habitat
Helianthus Argophyllus is native to the southern United States, including Texas, Oklahoma, and Louisiana. The plant can be found in open grasslands, prairies, and along roadsides.
Question and Answer
Q: Is Helianthus Argophyllus a good plant for attracting pollinators?
A: Yes, Helianthus Argophyllus is a great plant for attracting pollinators such as bees and butterflies.
Q: Can Helianthus Argophyllus grow in containers?
A: Yes, Helianthus Argophyllus can grow in containers, but it will require a large pot and regular watering.
Q: How often should I fertilize Helianthus Argophyllus?
A: Fertilize Helianthus Argophyllus with a balanced fertilizer in the spring and summer.
Q: Does Helianthus Argophyllus have any medicinal properties?
A: Some Native American tribes used Helianthus Argophyllus as a medicinal plant to treat various ailments, including fever and sore throat.
Related Plants
- Helianthus annuus (Common Sunflower)
- Helianthus maximiliani (Maximilian Sunflower)
- Helianthus decapetalus (Thinleaf Sunflower)
References
- “Helianthus argophyllus.” Missouri Botanical Garden. Accessed August 2021. https://www.missouribotanicalgarden.org/PlantFinder/PlantFinderDetails.aspx?taxonid=279888&isprofile=0&
- “Helianthus argophyllus.” Texas A&M AgriLife Extension. Accessed August 2021. https://aggie-horticulture.tamu.edu/ornamentals/nativeshrubs/helianthus-argophyllus/
- “Helianthus argophyllus.” Lady Bird Johnson Wildflower Center. Accessed August 2021. https://www.wildflower.org/plants/result.php?id_plant=HEAR2
