Contents
Description
Tithonia Rotundifolia, commonly known as Mexican Sunflower, is a flowering plant that belongs to the family of Asteraceae. It is native to Mexico and Central America but can now be found in various parts of the world due to its popularity as an ornamental plant. It is an annual plant that can grow up to six feet tall and two feet wide. Its bright orange and yellow flowers bloom from mid-summer to fall and attract various pollinators, making it a great addition to any garden.
Taxonomic Information
| Domain | Eukarya |
|---|---|
| Kingdom | Plantae |
| Phylum | Spermatophyta |
| Class | Magnoliopsida |
| Order | Asterales |
| Family | Asteraceae |
| Genus | Tithonia |
Appearance
Tithonia Rotundifolia has large, heart-shaped leaves that are up to 12 inches long and 10 inches wide. Its flowers are daisy-like and can be up to three inches in diameter. The petals are bright orange or yellow, and the center of the flower is dark brown or black. The plant has a bushy growth habit and can grow up to six feet tall. Its stems are sturdy and covered in small hairs.
Care Guide
Water: Tithonia Rotundifolia prefers well-draining soil that is kept moist but not waterlogged. Water the plant deeply once a week during the growing season and reduce watering during the winter months.
Fertilization: Fertilize Tithonia Rotundifolia with a balanced fertilizer once a month during the growing season. Avoid over-fertilizing, as this can lead to excessive foliage growth and fewer flowers.
Soil: Tithonia Rotundifolia prefers well-draining soil that is rich in organic matter. Amend the soil with compost or aged manure before planting.
Sunlight: Tithonia Rotundifolia thrives in full sun and requires at least six hours of direct sunlight per day.
Hardiness Zones: Tithonia Rotundifolia is hardy in USDA zones 9-11. In colder climates, it is grown as an annual plant.
Common Pests & Diseases
Tithonia Rotundifolia is generally resistant to pests and diseases. However, it can be affected by aphids, spider mites, and thrips. These pests can be controlled with insecticidal soap or neem oil. The plant can also be affected by fungal diseases such as powdery mildew and leaf spot. These diseases can be prevented by providing good air circulation and avoiding overhead watering.
Habitat
Tithonia Rotundifolia is native to Mexico and Central America but can now be found in various parts of the world. It is commonly grown as an ornamental plant in gardens and landscapes but can also be found in wild areas such as roadsides and disturbed areas.
Question and Answer
Q: Can Tithonia Rotundifolia grow in shade?
A: No, Tithonia Rotundifolia requires full sun to thrive and will not grow well in shade.
Q: How often should I fertilize Tithonia Rotundifolia?
A: Fertilize Tithonia Rotundifolia once a month during the growing season with a balanced fertilizer.
Q: Is Tithonia Rotundifolia drought-tolerant?
A: Tithonia Rotundifolia prefers moist soil but can tolerate short periods of drought once established.
Q: How tall can Tithonia Rotundifolia grow?
A: Tithonia Rotundifolia can grow up to six feet tall.
Related Plants
- Tithonia Diversifolia
- Tithonia Tubiformis
- Tithonia Tagetiflora
References
- University of Florida IFAS Extension. (n.d.). Mexican Sunflower. Retrieved from https://edis.ifas.ufl.edu/fp113
- Missouri Botanical Garden. (n.d.). Tithonia Rotundifolia. Retrieved from https://www.missouribotanicalgarden.org/PlantFinder/PlantFinderDetails.aspx?kempercode=d493
- Gardenia. (n.d.). Tithonia Rotundifolia (Mexican Sunflower). Retrieved from https://www.gardenia.net/plant-variety/tithonia-rotundifolia-mexican-sunflower
