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Description
Helianthus Nuttallii, commonly known as Nuttall’s sunflower, is a perennial herbaceous plant that belongs to the Asteraceae family. It is native to North America and can be found in the central and western regions of the United States and Canada. The plant can grow up to 2 meters tall and has a stout stem with few branches. It produces yellow flowers that bloom from August to October and has a distinctive scent.
Taxonomic Information
| Domain | Eukaryota |
|---|---|
| Kingdom | Plantae |
| Phylum | Spermatophyta |
| Class | Magnoliopsida |
| Order | Asterales |
| Family | Asteraceae |
| Genus | Helianthus |
Appearance
The leaves of Helianthus Nuttallii are lance-shaped with toothed edges and can grow up to 15 cm long and 3 cm wide. The flowers are about 5 cm in diameter and have yellow petals surrounding a dark center. The plant blooms in late summer and early fall, and the flowers can last for up to two weeks. The stem of the plant is hairy and can be green or reddish-brown in color.
Care Guide
Helianthus Nuttallii is a hardy plant that requires minimal care. Here are some tips on how to care for this plant:
- Water: The plant needs regular watering, especially during the growing season. The soil should be kept moist but not waterlogged.
- Fertilization: The plant does not require heavy fertilization, but a light application of fertilizer in the spring can help promote growth.
- Soil: The plant prefers well-drained soils that are rich in organic matter.
- Sunlight: The plant prefers full sun but can tolerate partial shade.
- Hardiness Zones: The plant is hardy in USDA zones 4-9.
Common Pests & Diseases
Helianthus Nuttallii is generally a healthy plant, but it can be affected by some pests and diseases. Here are some of the most common:
- Aphids: These small insects can cause damage to the plant by sucking the sap from the leaves and stems.
- Mildew: Powdery mildew can occur on the leaves of the plant, causing a white, powdery coating.
- Leaf spot: This fungal disease can cause dark spots on the leaves of the plant and can lead to defoliation.
Habitat
Helianthus Nuttallii is commonly found in prairies, meadows, and open woods. It prefers well-drained soils and can tolerate drought conditions. The plant is also commonly found along roadsides and in disturbed areas.
Question and Answer
Q: Is Helianthus Nuttallii an invasive species?
A: No, Helianthus Nuttallii is not considered invasive.
Q: Can Helianthus Nuttallii be grown in containers?
A: Yes, Helianthus Nuttallii can be grown in containers, but it may not reach its full potential in terms of size.
Q: How often should Helianthus Nuttallii be fertilized?
A: A light application of fertilizer in the spring is sufficient for Helianthus Nuttallii.
Q: Can Helianthus Nuttallii be propagated from cuttings?
A: No, Helianthus Nuttallii is typically propagated from seed.
Related Plants
- Helianthus annuus (common sunflower)
- Helianthus maximiliani (Maximilian sunflower)
- Helianthus tuberosus (Jerusalem artichoke)
References
- USDA Plants Database: Helianthus Nuttallii
- Missouri Botanical Garden: Helianthus Nuttallii
- Clemson Cooperative Extension: Nuttall’s Sunflower
