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Description
Helianthus Petiolaris Var. Canescens, commonly known as the Prairie Sunflower or Grey-Headed Sunflower, is a perennial flowering plant belonging to the Asteraceae family. It is native to North America and can be found in the central and western parts of the United States and Canada. The Prairie Sunflower can grow up to 3-7 feet tall and has a spread of about 2-3 feet. It produces large yellow flowers with brown centers that bloom from July to September. The leaves are long and narrow, and the stem is covered in fine hairs.
Taxonomic Information
| Domain | Eukarya |
|---|---|
| Kingdom | Plantae |
| Phylum | Spermatophyta |
| Class | Magnoliopsida |
| Order | Asterales |
| Family | Asteraceae |
| Genus | Helianthus |
| Species | Petiolaris |
| Variety | Canescens |
Appearance
The Prairie Sunflower has a striking appearance with its large yellow flowers and fine-haired stems. The flowers can grow up to 4 inches in diameter and have brown centers. The leaves are long and narrow, with a rough texture, and can reach up to 10 inches in length. The stems are sturdy and can support the weight of the flowers. The Prairie Sunflower is a perennial plant, meaning it will grow back each year. It can grow up to 3-7 feet tall and has a spread of about 2-3 feet. It is a great addition to any garden or landscape, adding a pop of color and texture.
Care Guide
Water: The Prairie Sunflower is drought-tolerant and does not require much water. Water it only when the soil is dry to the touch.
Fertilization: The Prairie Sunflower does not require much fertilization. Use a balanced fertilizer once a year in the spring.
Soil: The Prairie Sunflower prefers well-draining soil but can tolerate poor soil conditions. It can grow in sandy, loamy, or clay soils.
Sunlight: The Prairie Sunflower requires full sun exposure. Plant it in an area that receives at least 6 hours of sunlight per day.
Hardiness Zones: The Prairie Sunflower can grow in USDA hardiness zones 3-9.
Common Pests & Diseases
The Prairie Sunflower is relatively pest and disease-resistant. However, it can be susceptible to powdery mildew, rust, and leaf spot. These diseases can be prevented by planting in well-draining soil and providing adequate air circulation.
Habitat
The Prairie Sunflower is native to North America and can be found in the central and western parts of the United States and Canada. It prefers open areas, such as prairies, meadows, and fields. It can also be found along roadsides and in disturbed areas.
Question and Answer
Q: Is the Prairie Sunflower a perennial or annual plant?
A: The Prairie Sunflower is a perennial plant, meaning it will grow back each year.
Q: What type of soil does the Prairie Sunflower prefer?
A: The Prairie Sunflower prefers well-draining soil but can tolerate poor soil conditions. It can grow in sandy, loamy, or clay soils.
Q: What is the blooming period of the Prairie Sunflower?
A: The Prairie Sunflower blooms from July to September.
Q: What is the hardiness zone for the Prairie Sunflower?
A: The Prairie Sunflower can grow in USDA hardiness zones 3-9.
Related Plants
- Helianthus annuus (Common Sunflower)
- Helianthus maximiliani (Maximilian Sunflower)
- Helianthus divaricatus (Woodland Sunflower)
- Helianthus strumosus (Paleleaf Woodland Sunflower)
References
- “Helianthus petiolaris var. canescens.” Missouri Botanical Garden. https://www.missouribotanicalgarden.org/PlantFinder/PlantFinderDetails.aspx?taxonid=292361.
- “Helianthus petiolaris var. canescens.” USDA Plants Database. https://plants.usda.gov/core/profile?symbol=HEPE27.
- “Prairie Sunflower.” The Morton Arboretum. https://www.mortonarb.org/trees-plants/tree-plant-descriptions/prairie-sunflower.
