Calibrachoa

Description

Calibrachoa, also known as Million Bells, is a genus of flowering plants in the Solanaceae family. Native to South America, these plants are widely cultivated for their showy, trumpet-shaped flowers that bloom in a variety of colors, including red, pink, purple, yellow, and white. Calibrachoa is a popular choice for hanging baskets, containers, and garden beds due to their prolific blooming and low-maintenance nature.

Taxonomic Information

Appearance

Calibrachoa plants grow up to 8-10 inches tall and can spread up to 24 inches wide. They have small, oval-shaped leaves that are dark green in color. The flowers are trumpet-shaped and can grow up to 2 inches in diameter. They bloom profusely from early summer until the first frost in a variety of colors, including pink, red, purple, yellow, and white. Calibrachoa is a low-maintenance plant that requires minimal pruning to maintain its shape and promote new growth.

Care Guide

Calibrachoa plants are easy to care for and can thrive in a variety of growing conditions. Here are some tips for keeping your Calibrachoa plants healthy and blooming:

• Water: Calibrachoa plants prefer moist, well-draining soil. Water them regularly, ensuring that the soil is evenly moist but not waterlogged.
• Fertilization: Fertilize Calibrachoa plants every two weeks with a balanced fertilizer to promote healthy growth and blooming.
• Soil: Calibrachoa plants prefer well-draining soil with a pH range of 5.5-6.5. Use a high-quality potting mix or amend garden soil with organic matter to improve drainage.
• Sunlight: Calibrachoa plants require full sun to partial shade to thrive. Place them in a spot that receives at least six hours of direct sunlight per day.
• Hardiness Zones: Calibrachoa plants are hardy in USDA zones 9-11. In colder climates, they can be grown as annuals or overwintered indoors.

Common Pests & Diseases

Calibrachoa plants are relatively resistant to pests and diseases. However, here are some common issues to watch out for:

• Aphids: These small, soft-bodied insects can suck the sap from Calibrachoa plants, causing stunted growth and yellowing leaves. Use insecticidal soap or neem oil to control aphids.
• Spider Mites: These tiny pests can cause webbing and yellowing leaves. Spray Calibrachoa plants with a strong jet of water to dislodge spider mites or use insecticidal soap.
• Bacterial Wilt: This disease can cause wilting and yellowing leaves. Remove affected plants and avoid planting Calibrachoa in the same spot in the future.
• Root Rot: Overwatering or poorly-draining soil can cause root rot in Calibrachoa plants. Ensure that the soil is well-draining and avoid overwatering to prevent this issue.

Habitat

Calibrachoa plants are native to South America, where they grow in sunny, well-draining soils. They can tolerate a range of temperatures and growing conditions, making them a versatile plant for gardens and containers. Calibrachoa is a popular choice for tropical and subtropical climates due to their bright, showy flowers and low-maintenance nature.

Question and Answer

Q: How often should I fertilize my Calibrachoa plants?
A: Fertilize your Calibrachoa plants every two weeks with a balanced fertilizer during the growing season.

Q: Can Calibrachoa plants overwinter indoors?
A: Yes, Calibrachoa plants can be overwintered indoors in colder climates. Place them in a bright, sunny spot and reduce watering during the winter months.

Q: How do I propagate Calibrachoa plants?
A: Calibrachoa plants can be propagated from stem cuttings. Take a cutting from a healthy plant, remove the bottom leaves, and place the cutting in moist soil or water until roots form.

Q: Are Calibrachoa plants toxic to pets?
A: Calibrachoa plants are not toxic to pets or humans.

Related Plants

• Petunia
• Nicotiana
• Datura
• Brunfelsia

References

• “Calibrachoa.” Missouri Botanical Garden, www.missouribotanicalgarden.org/PlantFinder/PlantFinderDetails.aspx?kempercode=c543.
• “Calibrachoa.” Better Homes & Gardens, www.bhg.com/gardening/plant-dictionary/annual/calibrachoa/.
• “Calibrachoa (Million Bells).” The Spruce, www.thespruce.com/calibrachoa-plant-profile-5077131.