Description

Begonia is a genus of perennial flowering plants in the family Begoniaceae. It comprises over 1,800 species, including both annual and perennial plants, and hybrids. Begonias are native to tropical and subtropical regions, but they are also widely cultivated as ornamental plants, mainly for their showy flowers and foliage. The flowers of begonias are unisexual, and they have both male and female flowers on the same plant. The leaves of begonias are asymmetrical and often have a patterned or textured appearance.

Taxonomic Information

Appearance

Begonias have a wide range of appearances, depending on the species or hybrid. The leaves can be simple or compound, and they can be smooth or hairy. The flowers can be single or double, and they come in a variety of colors, including white, pink, red, yellow, and orange. Some begonias also have variegated foliage, with different colors or patterns on the leaves.

Care Guide

Begonias require specific care to thrive. Here are some tips:

• Water: Begonias prefer well-draining soil and moderate watering. Water them when the top inch of soil is dry, and avoid overwatering, as it can cause root rot.
• Fertilization: Fertilize begonias once a month during the growing season, using a balanced fertilizer. Avoid fertilizing during the winter months.
• Soil: Begonias prefer a soil mix that is rich in organic matter and well-draining. Use a potting mix that contains peat moss, perlite, and vermiculite.
• Sunlight: Begonias prefer bright, indirect sunlight, although some species can tolerate partial shade. Avoid direct sunlight, as it can scorch the leaves.
• Hardiness Zones: Begonias are typically grown as houseplants, but some species can be grown outdoors in USDA hardiness zones 10-11.

Common Pests & Diseases

Begonias are prone to a few pests and diseases, including:

• Spider mites: These tiny pests can cause yellowing and browning of the leaves. Use insecticidal soap or neem oil to control infestations.
• Mealybugs: These white, cottony pests can suck the sap from the leaves and stems, causing stunted growth. Use insecticidal soap or neem oil to control infestations.
• Bacterial leaf spot: This disease causes black or brown spots on the leaves, and it can be spread by splashing water. Remove infected leaves and use a copper-based fungicide to control the spread.

Habitat

Begonias are native to tropical and subtropical regions, including South and Central America, Africa, and Asia. They grow in a variety of habitats, including rainforests, swamps, and rocky areas. Some species are epiphytes, which grow on other plants, while others grow on the ground.

Question and Answer

Q: How often should I water my begonia?

A: Water your begonia when the top inch of soil is dry. Avoid overwatering, as it can cause root rot.

Q: Can begonias be grown outdoors?

A: Some begonia species can be grown outdoors in USDA hardiness zones 10-11.

Q: How do I control spider mites on my begonia?

A: Use insecticidal soap or neem oil to control spider mite infestations.

Q: What is the best soil mix for begonias?

A: Begonias prefer a soil mix that is rich in organic matter and well-draining. Use a potting mix that contains peat moss, perlite, and vermiculite.

Related Plants

• Alstroemeria
• Fuchsia
• Geranium
• Petunia
• Salvia

References

• “Begonia.” Missouri Botanical Garden. Accessed September 13, 2021. https://www.missouribotanicalgarden.org/PlantFinder/PlantFinderDetails.aspx?kempercode=b576
• “Begonia.” Royal Horticultural Society. Accessed September 13, 2021. https://www.rhs.org.uk/plants/100671/begonia/details
• “Begonia.” University of Florida IFAS Extension. Accessed September 13, 2021. https://gardeningsolutions.ifas.ufl.edu/plants/ornamentals/begonias.html