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Description
Helianthus Petiolaris, commonly known as prairie sunflower or lesser sunflower, is a species of sunflower in 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 plant is highly valued for its bright yellow flowers that bloom in late summer and fall, providing a source of food for birds and insects.
Taxonomic Information
| Domain | Eukaryota |
|---|---|
| Kingdom | Plantae |
| Phylum | Spermatophyta |
| Class | Magnoliopsida |
| Order | Asterales |
| Family | Asteraceae |
| Genus | Helianthus |
Appearance
Helianthus Petiolaris can grow up to 6 feet tall with a spread of 2-4 feet. Its leaves are long and narrow, measuring 4-10 inches in length and 0.5-1.5 inches in width. The plant produces bright yellow flowers that measure 2-3 inches in diameter and have dark centers. The flowers are borne in clusters at the top of the stem and bloom from late summer to fall. After the flowers fade, they are replaced by small, black seeds that are a source of food for birds and other wildlife.
Care Guide
Helianthus Petiolaris is a hardy plant that can tolerate a wide range of growing conditions. It prefers full sun and well-drained soil, but can also grow in poor soil and partial shade. The plant is drought-tolerant once established, but will benefit from occasional watering during prolonged dry spells. Fertilize the plant once a year in the spring with a balanced fertilizer. It is also important to deadhead the flowers to encourage more blooms.
Helianthus Petiolaris is hardy to USDA zones 4-9, meaning it can tolerate temperatures as low as -30°F.
Common Pests & Diseases
Helianthus Petiolaris is relatively pest-free and disease-resistant. However, it can be susceptible to powdery mildew, which can be controlled with fungicides. The plant can also be affected by aphids, which can be removed by spraying the plant with a strong jet of water.
Habitat
Helianthus Petiolaris is native to North America, where it can be found in prairies, meadows, and along roadsides. The plant prefers open areas with full sun and well-drained soil. It is an important source of food for birds and insects, including bees, butterflies, and moths.
Question and Answer
Q: Is Helianthus Petiolaris an annual or perennial plant?
A: Helianthus Petiolaris is a perennial plant.
Q: Can Helianthus Petiolaris grow in partial shade?
A: Yes, Helianthus Petiolaris can grow in partial shade, but it prefers full sun.
Q: What is the hardiness zone for Helianthus Petiolaris?
A: Helianthus Petiolaris is hardy to USDA zones 4-9.
Q: Is Helianthus Petiolaris a good plant for attracting wildlife?
A: Yes, Helianthus Petiolaris is an important source of food for birds and insects.
Related Plants
- Helianthus annuus (common sunflower)
- Helianthus maximiliani (Maximilian sunflower)
- Helianthus mollis (downy sunflower)
References
- Missouri Botanical Garden: Helianthus Petiolaris
- USDA Plants Database: Helianthus Petiolaris
- Gardening Know How: Information About Prairie Sunflower Plants
