Contents
Description
Ruellia Drummondiana, commonly known as Mexican Petunia, is a fast-growing perennial shrub that belongs to the Acanthaceae family. This plant is native to Mexico and South America and is widely grown in tropical and subtropical regions. It can grow up to five feet tall and three feet wide and produces showy, trumpet-shaped purple flowers that bloom from spring until fall.
Taxonomic Information
| Domain | Eukaryota |
|---|---|
| Kingdom | Plantae |
| Phylum | Spermatophyta |
| Class | Magnoliopsida |
| Order | Lamiales |
| Family | Acanthaceae |
| Genus | Ruellia |
Appearance
Ruellia Drummondiana has long, narrow leaves that are dark green and glossy. The leaves are arranged in an alternate pattern and can grow up to six inches long. The plant produces trumpet-shaped flowers that are typically purple but can also be pink or white. The flowers are about two inches wide and bloom in clusters at the end of the stems. The plant can grow up to five feet tall and three feet wide, making it an excellent choice for borders, hedges, and mass plantings.
Care Guide
Ruellia Drummondiana is a relatively low-maintenance plant that requires moderate watering and fertilization. It prefers well-draining soil and partial to full sunlight. Additionally, this plant is hardy in USDA zones 8-11.
Water
Mexican Petunia likes to have consistent moisture, so it is best to water deeply once a week during the growing season. Avoid overwatering, as this can cause root rot.
Fertilization
Fertilize the plant every four to six weeks during the growing season with a balanced, slow-release fertilizer. Avoid using high-nitrogen fertilizers, as this can lead to excessive leaf growth and fewer flowers.
Soil
Mexican Petunia prefers well-draining soil that is slightly acidic. If the soil is too heavy or clay-like, amend it with organic matter to improve drainage.
Sunlight
This plant prefers partial to full sunlight. If grown in full sunlight, it may require more frequent watering.
Hardiness Zones
Mexican Petunia is hardy in USDA zones 8-11.
Common Pests & Diseases
Mexican Petunia is relatively pest and disease-free. However, it may be susceptible to root rot if the soil is too wet. Additionally, it may attract spider mites, mealybugs, and whiteflies, which can be treated with insecticidal soap.
Habitat
Mexican Petunia is native to Mexico and South America and is widely grown in tropical and subtropical regions. It prefers warm temperatures and consistent moisture, making it an excellent choice for gardens in these regions.
Question and Answer
Q: Can Ruellia Drummondiana be grown indoors?
A: While this plant prefers to be grown outdoors, it can be grown indoors if given enough sunlight and consistent moisture.
Q: How often should I fertilize Mexican Petunia?
A: Fertilize the plant every four to six weeks during the growing season with a balanced, slow-release fertilizer.
Q: How do I prune Ruellia Drummondiana?
A: Prune the plant in late winter or early spring to promote bushy growth and remove any dead or diseased branches. Additionally, you can pinch back the tips of the stems to promote more flowers.
Q: Is Mexican Petunia toxic to pets?
A: While this plant is not considered toxic to pets, it may cause stomach upset if ingested in large quantities.
Related Plants
- Ruellia brittoniana
- Ruellia elegans
- Ruellia tuberosa
- Ruellia tweediana
References
- “Ruellia drummondiana.” Missouri Botanical Garden, www.missouribotanicalgarden.org/PlantFinder/PlantFinderDetails.aspx?taxonid=287994&isprofile=0&basic=Ruellia%20drummondiana. Accessed 16 May 2021.
- “Ruellia drummondiana.” University of Florida IFAS Extension, edis.ifas.ufl.edu/pdffiles/EP/EP39500.pdf. Accessed 16 May 2021.
- “Mexican Petunia (Ruellia brittoniana).” NC State Extension, content.ces.ncsu.edu/mexican-petunia-ruellia-brittoniana. Accessed 16 May 2021.
