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Description
Helenium Amarum, commonly known as Bitter Sneezeweed or Yellowdicks, is a species of the Asteraceae family. It is native to North America and thrives in different types of ecosystems. This perennial plant produces yellow, daisy-like flowers that bloom from July to October. The plant grows up to 3 feet tall and has an upright stem with several branches. The leaves are narrow and elongated, with serrated edges. The plant has a bitter taste and a strong odor that may cause sneezing.
Taxonomic Information
| Domain | Eukaryota |
|---|---|
| Kingdom | Plantae |
| Phylum | Spermatophyta |
| Class | Magnoliopsida |
| Order | Asterales |
| Family | Asteraceae |
| Genus | Helenium |
| Species | H. Amarum |
Appearance
Helenium Amarum has an upright stem that can grow up to 3 feet tall. The stem has several branches that bear yellow, daisy-like flowers with a brown center. The flowers bloom from July to October and are about 1 inch in diameter. The leaves are narrow and elongated, with serrated edges. The plant has a bitter taste and a strong odor that may cause sneezing.
Care Guide
Helenium Amarum is a low-maintenance plant that thrives in full sun to partial shade. It prefers well-drained soil and moderate watering. Fertilization is not necessary, but a light application of compost in the spring can help the plant grow stronger. The plant is hardy in USDA zones 3 to 9 and can survive in different types of soil, from sandy to clay.
Common Pests & Diseases
Helenium Amarum is generally resistant to pests and diseases. However, it may occasionally suffer from powdery mildew, rust, or leaf spot. These diseases can be prevented by ensuring good air circulation around the plant and avoiding overhead watering. Aphids and spider mites may sometimes infest the plant, but they can be controlled with insecticidal soap or neem oil.
Habitat
Helenium Amarum is native to North America and can be found in different types of ecosystems, from prairies to woodlands. It grows well in sunny areas with well-drained soil, such as roadsides and open fields. The plant is also commonly found in wetlands, where it can tolerate occasional flooding.
Question and Answer
Q: Is Helenium Amarum poisonous?
A: No, Helenium Amarum is not poisonous. However, it has a bitter taste and a strong odor that may cause sneezing and other allergic reactions in some people.
Q: Can Helenium Amarum grow in shade?
A: Yes, Helenium Amarum can grow in partial shade, but it prefers full sun.
Q: How often should I water my Helenium Amarum?
A: Helenium Amarum prefers moderate watering, about once a week. However, it can tolerate drought and does not require frequent watering.
Q: How tall can Helenium Amarum grow?
A: Helenium Amarum can grow up to 3 feet tall.
Related Plants
- Helenium autumnale
- Helenium bigelovii
- Helenium flexuosum
- Helenium hoopesii
- Helenium microcephalum
References
- “Helenium amarum.” Missouri Botanical Garden. Accessed 7 May 2021. <http://www.missouribotanicalgarden.org/PlantFinder/PlantFinderDetails.aspx?taxonid=280640&isprofile=0&=>
- “Helenium amarum.” USDA Plants Database. Accessed 7 May 2021. <https://plants.usda.gov/home/plantProfile?symbol=HEAM>
- “Helenium amarum.” Lady Bird Johnson Wildflower Center. Accessed 7 May 2021. <https://www.wildflower.org/plants/result.php?id_plant=HEAM>
