Mexican sunflower (Tithonia rotundifolia)
Care, watering, light and tips for Mexican sunflower on Floravia.
Quick facts
- Family: Asteraceae
- Difficulty: Easy to care for
- Watering: every 3 days
- Light: Full sun
- Temperature: 0–35 °C
- Toxicity: Toxic to pets
About Mexican sunflower
Tithonia rotundifolia, commonly known as Mexican Sunflower, is a fast-growing annual plant that produces vibrant, bright orange, large daisy-like flowers. Its sturdy stems and velvety foliage make it ideal for the back of borders, as a bedding plant, or as a focal point in cottage gardens, attracting pollinators. It can reach considerable heights, creating a stunning visual impact with its sun-evoking blooms.
Native range
Mexico and Central America
Care tips
It requires full sun for abundant flowering and optimal development; partial shade can reduce the number of blooms. It prefers well-drained soils of moderate to low fertility and tolerates some drought once established, though regular watering during dry spells will promote better flowering. Avoid over-fertilizing with nitrogen, as this can result in lush foliage but fewer flowers. To prolong blooming, deadhead spent flowers regularly.
How to save a dying Mexican sunflower
- Warning signs
- Yellowing or wilting leaves, soft stems, sparse or no flowering.
- First aid
- Check soil drainage and moisture. If potted, consider repotting to a larger one or planting in the garden. Ensure full sun and deadhead spent blooms.
- What kills it
- Overwatering that causes root rot or lack of sun. It does not tolerate shade or waterlogged soil.
- Can it be saved?
- Yes, if roots are not completely rotted and light/watering conditions are corrected.