Dahlia (Dahlia tenuis)
Care, watering, light and tips for Dahlia on Floravia.
Quick facts
- Family: Asteraceae
- Difficulty: Moderate care
- Watering: every 3 days
- Light: Full sun
- Temperature: 0–35 °C
- Toxicity: Toxic to pets
About Dahlia
Dahlia tenuis, known as Oaxaca Yellow Dahlia, is a wild dahlia species native to Mexico, valued for its vibrant yellow flowers with prominent centers. This herbaceous perennial develops slender, branching stems that can reach considerable heights, creating an ethereal and sunny presence in cottage gardens or as part of mixed borders. Its delicate flowers are a magnet for pollinators and add a touch of color and cheer to any outdoor space.
Native range
Oaxaca, Mexico
Care tips
Oaxaca Yellow Dahlia thrives in full sun, requiring at least 6-8 hours of direct sunlight daily for optimal flowering. It needs regular and deep watering, especially during dry periods, keeping the soil consistently moist but well-drained. Fertile, organic-rich soil with good drainage is crucial; avoid heavy, compacted soils that can lead to tuber rot. A common mistake is lack of support, as its slender stems may need staking to prevent bending or breaking in wind or from the weight of the flowers.
How to save a dying Dahlia
- Warning signs
- Yellowing or wilting leaves, soft or blackened stems. Mushy or foul-smelling roots.
- First aid
- Remove plant from pot. Trim rotten roots and damaged leaves. Repot in fresh, well-draining soil. Water with fungicide.
- What kills it
- Overwatering causing root and tuber rot. Lack of light or nutrients.
- Can it be saved?
- Yes, if you act quickly and rot isn't too advanced. Cut damaged parts and relocate.