Contents
Description
Hypericum Ascyron, commonly known as Great St. John’s Wort, is a species of perennial herbaceous plant in the Hypericaceae family. It is native to the eastern United States and Canada, and can be found in moist meadows, along stream banks, and in wetlands. The plant has a thick, woody stem that can grow up to 2 meters tall and a spread of up to 1 meter wide. The leaves are oblong and can grow up to 15 centimeters long. The plant produces yellow flowers that bloom in mid to late summer.
Taxonomic Information
| Domain | Eukaryota |
| Kingdom | Plantae |
| Phylum | Spermatophyta |
| Class | Magnoliopsida |
| Order | Malpighiales |
| Family | Hypericaceae |
| Genus | Hypericum |
Appearance
The Hypericum Ascyron has a thick, woody stem that can grow up to 2 meters tall and a spread of up to 1 meter wide. The leaves are oblong and can grow up to 15 centimeters long. The plant produces yellow flowers that bloom in mid to late summer. The flowers are about 3-4 centimeters in diameter and have five petals. The petals are bright yellow and have black dots on them. The plant also produces brown seed pods that split open when ripe.
Care Guide
Hypericum Ascyron is relatively easy to care for. It prefers moist soil that is well-drained and slightly acidic. The plant also requires full sun to partial shade. Here are some care tips:
- Water: Water the plant regularly, especially during the growing season. Avoid overwatering as it can cause root rot.
- Fertilization: Fertilize the plant once a year in the spring with a balanced fertilizer.
- Soil: Use well-draining soil that is slightly acidic.
- Sunlight: The plant requires full sun to partial shade.
- Hardiness Zones: Hypericum Ascyron is hardy in USDA zones 5-8.
Common Pests & Diseases
Hypericum Ascyron is generally resistant to pests and diseases. However, it can be susceptible to powdery mildew, rust, and leaf spot. Here are some common pests and diseases:
- Powdery Mildew: This fungal disease appears as a white powdery substance on the leaves. It can be prevented by providing good air circulation and avoiding overhead watering.
- Rust: This fungal disease appears as rust-colored spots on the leaves. It can be prevented by providing good air circulation and avoiding overhead watering.
- Leaf Spot: This fungal disease appears as brown spots on the leaves. It can be prevented by providing good air circulation and avoiding overhead watering.
Habitat
Hypericum Ascyron is native to the eastern United States and Canada, and can be found in moist meadows, along stream banks, and in wetlands. The plant prefers moist soil and full sun to partial shade.
Question and Answer
Q: Is Hypericum Ascyron poisonous?
A: No, Hypericum Ascyron is not poisonous. However, it can cause skin irritation in some people.
Q: How tall can Hypericum Ascyron grow?
A: Hypericum Ascyron can grow up to 2 meters tall.
Q: When do Hypericum Ascyron flowers bloom?
A: Hypericum Ascyron flowers bloom in mid to late summer.
Q: What is the hardiness zone for Hypericum Ascyron?
A: Hypericum Ascyron is hardy in USDA zones 5-8.
Related Plants
- Hypericum perforatum
- Hypericum calycinum
- Hypericum frondosum
- Hypericum androsaemum
References
- Froelich, S. (2014). Hypericum Ascyron. Missouri Botanical Garden. https://www.missouribotanicalgarden.org/PlantFinder/PlantFinderDetails.aspx?kempercode=f292
- Gilman, E. F. (1999). Hypericum ascyron. University of Florida IFAS Extension. https://edis.ifas.ufl.edu/publication/FN183
- USDA Natural Resources Conservation Service. (n.d.). Hypericum ascyron L. Plants Database. https://plants.usda.gov/core/profile?symbol=HYAS2
