Copiapoa cinerea X tenuissima RNM3

The Copiapoa cinerea X tenuissima hybrid is a cross between two species of the Copiapoa genus: Copiapoa cinerea, known for its distinctive greyish-blue color and dense spination, and Copiapoa longistaminea, recognized for its longer stamen and often larger, more pronounced flowers. Hybrids like this are quite popular among cactus enthusiasts for their unique characteristics derived from both parent species. Here's a general description and cultivation tips for this hybrid:

Description

1. Growth Habit: The hybrid usually shows a columnar growth pattern, potentially forming clusters or mounds over time, depending on the dominant traits inherited.
2. Stem: The stem color may vary, often exhibiting a bluish-grey hue reminiscent of C. cinerea, but this can be influenced by the traits of C. longistaminea.
3. Spines: The spination is typically dense, combining the thick, grey spines of C. cinerea with the potentially longer and more pronounced spines from C. longistaminea.
4. Flowers: The flowers may be larger and more conspicuous, drawing from the longistaminea's traits, and can vary in color, often yellow or whitish.
5. Size and Growth Rate: Like most Copiapoa species, this hybrid is likely to be slow-growing. The size at maturity can vary depending on which parental traits are more dominant.

Cultivation Tips

1. Lighting: Prefers bright, indirect sunlight. While they can tolerate direct sun, protection during the hottest part of the day is beneficial, especially in very warm climates.
2. Watering: Water moderately in the growing season and sparingly in winter. Allow the soil to dry completely between waterings. Overwatering can cause root rot.
3. Soil: A well-draining cactus mix is essential. A mix of potting soil, coarse sand, and perlite or pumice is ideal.
4. Temperature: These cacti prefer warm conditions and need protection from frost. They can tolerate a range of temperatures but thrive best between 10°C to 30°C (50°F to 86°F).
5. Fertilizer: Use a low-nitrogen cactus fertilizer during the growing season. Avoid over-fertilizing.
6. Repotting: Repot every few years to refresh the soil. Be cautious of the spines when handling.
7. Pests and Diseases: Look out for common pests like mealybugs. Ensure good ventilation and proper watering to prevent fungal diseases.

Hybrids like the Copiapoa cinerea x longistaminea are particularly valued for their unique appearance and the blending of desirable traits from two different species. With proper care, they can be a spectacular addition to any cactus collection, offering a blend of beauty and resilience.