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Description
Hypericum Calycinum Golden Rule, also known as Aaron’s Beard, is a low-growing, evergreen shrub that is native to southeastern Europe and western Asia. This plant is a member of the Hypericaceae family, which includes over 400 species of herbs, shrubs, and trees. Hypericum Calycinum Golden Rule is a popular ornamental plant that is valued for its bright yellow flowers and attractive foliage.
Taxonomic Information
| Domain | Eukaryota |
| Kingdom | Plantae |
| Phylum | Spermatophyta |
| Class | Magnoliopsida |
| Order | Malpighiales |
| Family | Hypericaceae |
| Genus | Hypericum |
Appearance
The leaves of Hypericum Calycinum Golden Rule are dark green and glossy, with a lanceolate shape and a slightly serrated edge. The flowers are large and showy, with five petals and numerous stamens. They are bright yellow in color and bloom from late spring to early summer. The plant grows up to 18 inches tall and spreads up to 3 feet wide.
Care Guide
Hypericum Calycinum Golden Rule prefers well-drained soil with a pH of 5.5 to 7.5. It requires moderate watering, with the soil being kept moist but not waterlogged. Fertilize the plant once a year in early spring with a balanced fertilizer. This plant prefers full sun to partial shade and is hardy in USDA zones 5 to 9.
Common Pests & Diseases
Hypericum Calycinum Golden Rule is susceptible to several pests and diseases, including leaf spot, powdery mildew, and rust. These diseases can be treated with fungicides. The plant is also vulnerable to spider mites and aphids, which can be controlled with insecticidal soap or neem oil.
Habitat
Hypericum Calycinum Golden Rule is found in a variety of habitats, including meadows, rocky slopes, and woodland edges. It is commonly grown as an ornamental plant in gardens and landscaping.
Question and Answer
Q: Is Hypericum Calycinum Golden Rule toxic?
A: No, this plant is not toxic to humans or animals. However, the ingestion of large amounts of the plant can cause stomach upset.
Q: How often should I fertilize Hypericum Calycinum Golden Rule?
A: Fertilize the plant once a year in early spring with a balanced fertilizer.
Q: What is the hardiness zone for Hypericum Calycinum Golden Rule?
A: This plant is hardy in USDA zones 5 to 9.
Q: How tall does Hypericum Calycinum Golden Rule grow?
A: The plant grows up to 18 inches tall.
Related Plants
- Hypericum Androsaemum
- Hypericum Perforatum
- Hypericum Moserianum
- Hypericum Hidcoteense
References
- “Hypericum Calycinum.” Missouri Botanical Garden. https://www.missouribotanicalgarden.org/PlantFinder/PlantFinderDetails.aspx?kempercode=b165
- “Hypericum Calycinum Golden Rule.” Royal Horticultural Society. https://www.rhs.org.uk/Plants/10266/Hypericum-calycinum-Golden-Rule/Details
- “Hypericum Calycinum (Aaron’s Beard).” Gardenia. https://www.gardenia.net/plant/hypericum-calycinum-aarons-beard
