Canna Flowers
Canna flowers, also referred to as Canna lilies, are part of the genus Canna within the family Cannaceae. While they are commonly called “lilies,” they are not true lilies. These tropical and subtropical plants are celebrated for their vibrant, exotic blooms and lush, tropical foliage.
Key Characteristics:
- Flowers:
- Colors: Cannas come in a range of colors including red, orange, yellow, pink, and even combinations of these.
- Structure: The flowers are large, showy, and often have a somewhat asymmetrical appearance.
- Foliage:
- Colors: The leaves can be green, bronze, or variegated with patterns of color.
- Style: Leaves are large, banana-like, giving the plant a lush, tropical look.
- Growth Habit:
- Height: Depending on the variety, Cannas can range from 1.5 feet to over 8 feet tall.
- Growth: They grow from rhizomes, which are underground stems capable of producing the roots and shoots that grow into new plants.
Planting and Care:
- Sunlight:
- Cannas thrive in full sun but can tolerate partial shade.
- Soil:
- They prefer well-draining soil but require a fair amount of moisture.
- Soil should be rich in organic matter for optimal growth.
- Watering:
- Regular watering to keep the soil consistently moist, especially during dry spells.
- Overwatering in poorly draining soils can lead to root rot.
- Fertilizing:
- Benefit from regular feeding with a balanced garden fertilizer to promote robust growth and plentiful blooms.
- Pruning and Deadheading:
- Remove spent blooms to encourage new ones.
- At the end of the growing season, cut back the foliage to ground level after it has been killed by frost.
- Winter Care:
- In colder climates, the rhizomes should be dug up after the first frost, stored in a cool, dry place, and replanted in the spring.
- In warmer climates, they can be left in the ground but may need mulching for protection.
Pests and Diseases:
- Pests: Tomato hornworms, slugs, and snails can occasionally be problematic.
- Diseases: While generally hardy, Cannas can be susceptible to fungal infections, particularly in overly wet conditions. Proper spacing and good air circulation can help mitigate this.
Cannas are versatile in garden design and work well in mixed borders, as standalone specimens, or even in containers. Their striking appearance and relatively low maintenance make them a popular choice among gardeners looking to add a touch of the tropics to their landscape.