Contents
Description
Roldana Barba-Johannis is a species of flowering plants in the sunflower family (Asteraceae). It is native to Mexico and is known for its beautiful yellow flowers that bloom in the summer. The leaves of the plant are green and somewhat hairy, while the stems are woody and can reach up to six feet in height.
Taxonomic Information
| Domain | Eukaryota |
|---|---|
| Kingdom | Plantae |
| Phylum | Spermatophyta |
| Class | Magnoliopsida |
| Order | Asterales |
| Family | Asteraceae |
| Genus | Roldana |
Appearance
Roldana Barba-Johannis is a beautiful plant with yellow daisy-like flowers that bloom in the summer. The leaves are green and somewhat hairy, while the stems are woody and can reach up to six feet in height. The flowers are about an inch in diameter and have a bright yellow color.
Care Guide
To care for Roldana Barba-Johannis, it is important to provide it with well-draining soil that is slightly acidic. The plant needs to be watered regularly, but it should not be overwatered as this can lead to root rot. The plant should be fertilized once a month during the growing season using a balanced fertilizer.In terms of sunlight, Roldana Barba-Johannis prefers full sun, but it can tolerate partial shade. The plant is hardy in USDA zones 9-11 and can be grown both in the ground and in containers.
Common Pests & Diseases
Roldana Barba-Johannis is generally a healthy plant, but it can be susceptible to spider mites, whiteflies, and aphids. These pests can be controlled using insecticidal soap or neem oil.The plant can also be affected by root rot if it is overwatered or if the soil does not drain well. To prevent this, make sure to provide the plant with well-draining soil and to water it only when the top inch of soil is dry.
Habitat
Roldana Barba-Johannis is native to Mexico and is found in rocky, dry areas at elevations of up to 6,000 feet. The plant is adapted to the hot, dry climate of its native habitat and is drought-tolerant.
Question and Answer
Q: Can Roldana Barba-Johannis be grown indoors?
A: While it is possible to grow Roldana Barba-Johannis indoors, it is best to grow it outdoors in full sun.
Q: Is Roldana Barba-Johannis a perennial or an annual?
A: Roldana Barba-Johannis is a perennial plant.
Q: How often should Roldana Barba-Johannis be fertilized?
A: Roldana Barba-Johannis should be fertilized once a month during the growing season using a balanced fertilizer.
Q: Is Roldana Barba-Johannis deer-resistant?
A: Roldana Barba-Johannis is not known to be deer-resistant.
Related Plants
- Roldana petasitis
- Roldana hartwegii
- Roldana oaxacana
- Roldana lanata
References
- “Roldana Barba-Johannis.” PlantFiles. Accessed 20 November 2021. https://davesgarden.com/guides/pf/go/181293/.
- “Roldana Barba-Johannis.” Missouri Botanical Garden. Accessed 20 November 2021. https://www.missouribotanicalgarden.org/PlantFinder/PlantFinderDetails.aspx?taxonid=293541.
- “Roldana Barba-Johannis.” San Marcos Growers. Accessed 20 November 2021. https://www.smgrowers.com/products/plants/plantdisplay.asp?plant_id=3845.
