Dicoria

Description

Dicoria is a genus of flowering plants in the sunflower family, native to arid regions of North and South America. It is a hardy plant that can withstand harsh environmental conditions, such as drought and extreme temperatures. There are two known species of Dicoria, namely Dicoria canescens and Dicoria canbyi.

Taxonomic Information

Appearance

Dicoria plants are small, shrubby perennials that can grow up to 30 cm in height. They have woody stems and small, narrow leaves that are mostly alternate. The flowers are small and yellow, with a diameter of about 5 mm. They bloom in late spring and summer, and are followed by small, hairy fruits that contain a single seed.

Care Guide

When it comes to taking care of Dicoria plants, it is important to keep in mind that they are adapted to arid environments and require minimal watering. Here are some tips on how to care for Dicoria:

• Water: Water your Dicoria plant sparingly, only when the soil is completely dry. Overwatering can cause root rot and other problems.
• Fertilization: Dicoria plants do not require much fertilization. You can use a low-nitrogen fertilizer once or twice a year, in the spring and fall.
• Soil: Dicoria plants prefer well-draining soil that is sandy or rocky. Avoid heavy clay soils that can hold too much moisture.
• Sunlight: Dicoria plants prefer full sun, but can tolerate some shade. Make sure they get at least 6 hours of direct sunlight per day.
• Hardiness Zones: Dicoria plants are hardy in USDA zones 8-10.

Common Pests & Diseases

Dicoria plants are generally resistant to pests and diseases. However, they can occasionally be attacked by spider mites, mealybugs, and scale insects. These pests can be treated with insecticidal soap or neem oil. Root rot can also be a problem if the plant is overwatered or planted in poorly-draining soil.

Habitat

Dicoria plants are native to arid regions of North and South America, including the southwestern United States, Mexico, and Argentina. They can be found growing in sandy or rocky soils, on hillsides, and in deserts. Dicoria plants are adapted to hot, dry climates and can survive long periods of drought.

Question and Answer

Q: Can Dicoria plants tolerate frost?

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

Q: Can Dicoria plants be grown indoors?

A: It is possible to grow Dicoria plants indoors, but they require bright, direct sunlight and well-draining soil.

Q: How often should I fertilize my Dicoria plant?

A: Dicoria plants do not require much fertilization. You can use a low-nitrogen fertilizer once or twice a year, in the spring and fall.

Q: How long do Dicoria plants live?

A: Dicoria plants are perennials and can live for several years with proper care.

Related Plants

• Encelia
• Baileya
• Hymenoclea
• Porophyllum

References

• Flora of North America North of Mexico. Vol. 21. 2006.
• The Jepson Manual: Vascular Plants of California. 2nd edition. 2012.
• Munz, P.A. and D.D. Keck. A California Flora. 2nd edition. 1959.