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Description
Eupatorium Semiserratum, also known as false boneset, is a perennial wildflower that belongs to the Asteraceae family. It is native to North America and can be found growing in moist meadows, wetlands, and along stream banks. The plant can grow up to 6 feet tall with a spread of 2-3 feet. The stem is square-shaped and covered in fine hair, and the leaves are serrated and arranged in opposite pairs. The flowers are small and white, clustered in flat-topped clusters that bloom from mid-summer to early autumn.
Taxonomic Information
| Domain | Eukaryota |
| Kingdom | Plantae |
| Phylum | Spermatophyta |
| Class | Magnoliopsida |
| Order | Asterales |
| Family | Asteraceae |
| Genus | Eupatorium |
Appearance
Eupatorium Semiserratum has a tall and upright growth habit, with leaves that are serrated and arranged in opposite pairs. The stems are square-shaped and covered in fine hair. The flowers are small and white, clustered in flat-topped clusters that bloom from mid-summer to early autumn. The plant can grow up to 6 feet tall with a spread of 2-3 feet. The leaves and stems emit a distinct odor when crushed.
Care Guide
Eupatorium Semiserratum prefers moist soil and partial shade, but can tolerate full sun with adequate water. The plant should be watered regularly, especially during periods of drought. Fertilization is not necessary, but a layer of compost or organic mulch can be added in the spring. The plant prefers well-draining soil that is rich in organic matter.
Eupatorium Semiserratum is hardy in USDA zones 4-9 and can tolerate cold temperatures. In colder regions, the plant may die back to the ground in the winter and reemerge in the spring. In warmer regions, the plant may remain evergreen throughout the year.
Common Pests & Diseases
Eupatorium Semiserratum is generally resistant to pests and diseases. However, it may be susceptible to powdery mildew if grown in excessively moist conditions. The plant may also attract aphids, which can be controlled with neem oil or insecticidal soap.
Habitat
Eupatorium Semiserratum is native to North America and can be found growing in moist meadows, wetlands, and along stream banks. The plant prefers partial shade and moist soil, but can tolerate full sun with adequate water. It is hardy in USDA zones 4-9 and can tolerate cold temperatures.
Question and Answer
Q: Is Eupatorium Semiserratum poisonous to humans or animals?
A: Eupatorium Semiserratum is not toxic to humans or animals, but should not be ingested in large quantities.
Q: Can Eupatorium Semiserratum be grown in containers?
A: Eupatorium Semiserratum can be grown in containers, but it may require more frequent watering and fertilization than if grown in the ground.
Q: Does Eupatorium Semiserratum attract pollinators?
A: Eupatorium Semiserratum is a nectar-rich plant that attracts bees, butterflies, and other pollinators.
Q: How often should Eupatorium Semiserratum be fertilized?
A: Eupatorium Semiserratum does not require regular fertilization, but a layer of compost or organic mulch can be added in the spring.
Related Plants
- Eupatorium Perfoliatum
- Eupatorium Purpureum
- Eupatorium Fistulosum
References
- “Eupatorium Semiserratum.” Missouri Botanical Garden. Accessed August 25, 2021. https://www.missouribotanicalgarden.org/PlantFinder/PlantFinderDetails.aspx?kempercode=b658.
- “Eupatorium Semiserratum.” Lady Bird Johnson Wildflower Center. Accessed August 25, 2021. https://www.wildflower.org/plants/result.php?id_plant=EUSE4.
- “Eupatorium Semiserratum.” Illinois Wildflowers. Accessed August 25, 2021. https://www.illinoiswildflowers.info/wetland/plants/fs_boneset.htm.
