Mirabilis

Description

Mirabilis is a genus of flowering plants that includes approximately 60 species. These plants are known for their vibrant colors and hardiness, making them a popular choice for gardeners across the world. Mirabilis plants are native to the Americas, with some species also found in Asia and Africa. They are commonly known as four o’clocks due to their habit of blooming in the late afternoon.

Taxonomic Information

Domain	Eukaryota
Kingdom	Plantae
Phylum	Angiosperms
Class	Magnoliopsida
Order	Caryophyllales
Family	Nyctaginaceae
Genus	Mirabilis

Appearance

Mirabilis plants can vary in size from small annuals to large shrubs. They have thick, fleshy leaves that are typically green but can also be variegated. The flowers of Mirabilis plants are trumpet-shaped and can be found in a range of colors, including pink, red, yellow, and white. The flowers bloom in the late afternoon and close up in the morning, giving the plant its common name of four o’clocks. Mirabilis plants also produce small, round seeds that can be saved for planting in the following season.

Care Guide

Mirabilis plants are generally easy to care for and can thrive in a variety of growing conditions. Here are some tips for caring for your Mirabilis:

• Water: Mirabilis plants prefer well-drained soil and do not like to be overwatered. Water deeply once a week, or more often in hot, dry weather.
• Fertilization: Apply a balanced fertilizer every two weeks during the growing season to encourage healthy growth and blooming.
• Soil: Mirabilis plants prefer well-drained soil that is rich in organic matter. They can also tolerate poor soil conditions.
• Sunlight: Mirabilis plants prefer full sun but can also tolerate partial shade.
• Hardiness Zones: Mirabilis plants are hardy in USDA zones 4-11.

Common Pests & Diseases

Mirabilis plants are generally resistant to pests and diseases. However, they can still be affected by some common problems:

• Aphids: These small insects can suck the sap from Mirabilis plants, causing stunted growth and distorted leaves. Treat with a neem oil spray or insecticidal soap.
• Spider mites: These tiny pests can cause yellowing and browning of leaves. Treat with a miticide spray.
• Powdery mildew: This fungal disease can cause a white powdery coating on leaves. Treat with a fungicide spray.

Habitat

Mirabilis plants are native to the Americas, with some species also found in Asia and Africa. They can be found in a variety of habitats, including deserts, grasslands, and forests. Mirabilis plants are adapted to drought conditions and can survive long periods without water. They are also tolerant of poor soil conditions and can grow in rocky or sandy soils.

Question and Answer

Q: Can Mirabilis plants tolerate frost?

A: No, Mirabilis plants are not frost-tolerant and should be protected from freezing temperatures.

Q: How often should I fertilize my Mirabilis plant?

A: Apply a balanced fertilizer every two weeks during the growing season to encourage healthy growth and blooming.

Q: How do I propagate Mirabilis plants?

A: Mirabilis plants can be propagated by seed or by taking cuttings from the parent plant.

Q: Can I grow Mirabilis plants in containers?

A: Yes, Mirabilis plants can be grown in containers as long as they have enough space for their roots to grow and are watered regularly.

Related Plants

• Mirabilis jalapa
• Mirabilis expansa
• Mirabilis multiflora
• Mirabilis longiflora

References

• Bonnie L. Grant. “Mirabilis Information – Learn How To Grow Four O’Clock Flowers.” Gardening Know How, https://www.gardeningknowhow.com/ornamental/flowers/four-oclocks/growing-four-oclock-flowers.htm.
• “Mirabilis.” Missouri Botanical Garden, http://www.missouribotanicalgarden.org/PlantFinder/PlantFinderDetails.aspx?kempercode=c798.
• “Mirabilis.” World Flora Online, http://www.worldfloraonline.org/taxon/wfo-4000003741.