Tropical ash
Fraxinus uhdei
Uhdei
About this plant
Fraxinus uhdei, commonly called tropical ash, is a fast-growing evergreen tree native to Mexico and Central America. It has a broad, spreading canopy with dense green leaves and produces small flowers that release pollen. This tree is often used for shade in parks and streets in warm climates. It is valued for its rapid growth and ability to tolerate urban conditions.
Taxonomy
- Genus
- Fraxinus
- Family
- Oleaceae
- Higher classification
- Order Lamiales
- Plant type
- Tree
- Lifespan
- Perennial
Origin & Distribution
- Native region
- Mexico, Central America
- Distribution
- Native to Mexico and Central America; widely planted in warm regions including parts of the southern United States, South America, and Asia.
Care
- Light preference
- Full sun
- Suitable locations
- Outdoor, Balcony, Greenhouse
- Watering frequency
- Moderate
- Watering interval
- 7–14 days
- Humidity
- Normal
- Minimum
- 5 °C
- Maximum
- 40 °C
- Optimal
- 15-30 °C
- USDA hardiness zones
- 9-11
- Soil pH
- 6.0-7.5 (slightly acidic to neutral)
- Soil type
- well-draining loam
Watering. Water regularly during the first few years to establish a strong root system. Once established, tropical ash tolerates some drought but benefits from occasional deep watering during dry periods.
Fertilizing. Fertilize tropical ash in early spring with a balanced, slow-release fertilizer to support healthy growth. Additional feeding during the growing season can help if the tree shows signs of nutrient deficiency.
Tropical ash is a hardy tree that grows quickly and tolerates some shade. It prefers well-draining soil and regular watering but can handle short dry periods. It may face problems if overwatered or planted in poorly drained soil. Maintenance includes occasional pruning to shape and remove dead branches.
Propagation
- Propagation methods
- Seeds, Cuttings
- Care difficulty
- Medium
Ornamental features
- Flowering
- Yes
- Flowering period
- spring
Dense green foliage providing good shade; small flowers that produce pollen; broad spreading form.
Toxicity & Safety
- Toxic to humans
- Non-toxic
- Toxic to pets
- Non-toxic
- Weed potential
- Low spread
Non-toxic to humans and pets. Safe to plant in residential areas.
Allergy information
- Allergy risk
- Moderate
- Allergy triggers
- Pollen
- Pollen level
- High
Fraxinus uhdei, also known as tropical ash, produces pollen that can cause allergic reactions in sensitive individuals, especially during its flowering season. People prone to pollen allergies may experience sneezing, runny nose, or itchy eyes. To reduce exposure, avoid being near the tree when it is releasing pollen and keep windows closed during high pollen times.
Common problems
Overwatering can cause root rot. Poor drainage and compacted soil may lead to poor growth. Pests like aphids or scale insects can occasionally appear.
Uses
Used mainly as a shade tree in parks, streets, and large gardens. Also valued for erosion control and urban landscaping.
Notes
Prune in late winter or early spring to maintain shape and remove dead wood. Avoid planting in areas with poor drainage. This tree can become quite large, so ensure enough space for growth.