Dahlia
Dahlia pinnata
About this plant
Dahlia pinnata is a popular garden plant known for its large, colorful flowers that bloom in summer and autumn. It grows from tuberous roots and produces a variety of flower shapes and colors. Dahlias are often used in flower beds, borders, and as cut flowers for decoration.
Taxonomy
- Genus
- Dahlia
- Family
- Asteraceae
- Plant type
- Perennial
- Lifespan
- Perennial
Origin & Distribution
- Native region
- Mexico, Central America
- Distribution
- Widely cultivated worldwide in temperate regions
Care
- Light preference
- Full sun
- Suitable locations
- Outdoor, Balcony, Greenhouse
- Preferred window facing
- South-facing, West-facing, East-facing
- Watering frequency
- Moderate
- Watering interval
- 3–7 days
- Humidity
- Normal
- Minimum
- 5 °C
- Maximum
- 30 °C
- Optimal
- 15-25 °C
- USDA hardiness zones
- 8-11
- Soil pH
- 6.0-7.5 (slightly acidic to neutral)
- Soil type
- well-draining loam, rich in organic matter
Watering. Water regularly to keep soil moist but not soggy. Avoid letting tubers sit in water to prevent rot.
Fertilizing. Feed with a balanced fertilizer every 4-6 weeks during the growing season to encourage healthy growth and abundant blooms.
Dahlias need regular watering and full sun to thrive. They can be sensitive to frost and require tuber lifting in colder climates. Watch for pests like aphids and mildew. Overall, moderate care is needed to keep them healthy and blooming.
Propagation
- Propagation methods
- Division, Cuttings, Seeds
- Care difficulty
- Medium
Ornamental features
- Flowering
- No
Large, showy flowers in many colors including red, pink, yellow, white, and orange; lush green foliage
Toxicity & Safety
- Toxic to humans
- Non-toxic
- Toxic to pets
- Non-toxic
- Weed potential
- Low spread
Safe around children and pets.
Common problems
Overwatering can cause tuber rot. Lack of sunlight reduces flowering. Pests like aphids and fungal diseases can affect the plant if not managed.
Uses
Primarily grown as an ornamental plant for colorful garden displays and cut flower arrangements.
Notes
Lift and store tubers indoors in colder climates during winter to protect from frost. Pinch back stems early in the season to encourage bushier growth and more flowers.