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Description
Vernonia Lettermannii, commonly known as Ironweed, is a perennial flowering plant that belongs to the Asteraceae family. This plant is native to North America and is found in the central and eastern regions of the United States. Vernonia Lettermannii can grow up to 6 feet tall and 3 feet wide, with an upright form and a clumping habit. The plant produces showy flowers that are pinkish-purple in color and bloom from mid-summer to early fall. The flowers are a great source of nectar for bees and butterflies and add a pop of color to any garden.
Taxonomic Information
| Domain | Eukaryota |
| Kingdom | Plantae |
| Phylum | Spermatophyta |
| Class | Magnoliopsida |
| Order | Asterales |
| Family | Asteraceae |
| Genus | Vernonia |
Appearance
Vernonia Lettermannii has a striking appearance, with its tall and upright form and pinkish-purple flowers. The plant has dark green, lance-shaped leaves that are up to 6 inches long and 2 inches wide. The leaves are hairy and have a rough texture. The flowers are small and clustered together in dense, flat-topped inflorescences that can reach up to 8 inches in diameter. The petals of the flowers are narrow and have a tubular shape, creating a tube-like structure that is attractive to pollinators.
Care Guide
Vernonia Lettermannii is a relatively low-maintenance plant that thrives in full sun and moist, well-drained soil. Here are some tips on how to care for this plant:
Water: Water your Vernonia Lettermannii regularly to keep the soil moist. Avoid overwatering, as this can lead to root rot.
Fertilization: Fertilize your Vernonia Lettermannii once a month during the growing season with a balanced fertilizer.
Soil: Vernonia Lettermannii prefers moist, well-drained soil that is rich in organic matter.
Sunlight: This plant thrives in full sun, but can tolerate some shade.
Hardiness Zones: Vernonia Lettermannii is hardy in USDA zones 5-9.
Common Pests & Diseases
Vernonia Lettermannii is generally free of pests and diseases, but it can be susceptible to powdery mildew and leaf spot. Here are some tips on how to prevent these common problems:
Powdery Mildew: To prevent powdery mildew, avoid overhead watering and keep the foliage dry. If powdery mildew does occur, treat it with a fungicide.
Leaf Spot: To prevent leaf spot, avoid watering the foliage and remove any infected leaves. Treat with a fungicide if necessary.
Habitat
Vernonia Lettermannii is native to North America and is found in the central and eastern regions of the United States. This plant prefers moist, well-drained soil and thrives in open fields, meadows, and prairies. It is also commonly found along roadsides and in disturbed areas. Vernonia Lettermannii is an important source of nectar for bees and butterflies and provides habitat for a variety of wildlife.
Question and Answer
Q: Is Vernonia Lettermannii drought-tolerant?
A: No, Vernonia Lettermannii prefers moist soil and does not tolerate drought well.
Q: Can I grow Vernonia Lettermannii in a container?
A: While Vernonia Lettermannii can be grown in a container, it is best suited for planting in the ground.
Q: How long does Vernonia Lettermannii bloom?
A: Vernonia Lettermannii blooms from mid-summer to early fall.
Q: How tall does Vernonia Lettermannii grow?
A: Vernonia Lettermannii can grow up to 6 feet tall.
Related Plants
Here are some related plants that are similar to Vernonia Lettermannii:
- Vernonia baldwinii
- Vernonia gigantea
- Vernonia noveboracensis
- Vernonia fasciculata
References
- “Vernonia lettermannii” Missouri Botanical Garden
- “Vernonia lettermannii” Plant Finder
- “Vernonia lettermannii” Lady Bird Johnson Wildflower Center
