Copiapoa tenuissima f. monstrosa - Starry Night

Copiapoa tenuissima f. monstrosa - Starry Night

You will receive this exact specimen.
Measures over 4" wide.
Roots as  shown.
Showcased here in cement planter (sold separately).  
Will be shipped bare root.  

Copiapoa tenuissima f. monstruosa is a clumping cultivar of the Copiapoa tenuissima species, known for its dense, often small, branching stems and yellow, fragrant flowers. These cacti form clusters of heads that can fill a small bowl, with stems that darken almost black in direct sunlight. They prefer light shade or full sun, but should be protected from excessive heat in summer.  This copiapoa is native to Chile and is a slow growing cactus…so patience is key.

Key features of Copiapoa tenuissima f. monstruosa:

• Clumping Growth: Forms dense clusters of stems rather than a single, tall cactus. 
• Dark Stems: Stems can turn almost black in direct sunlight. 
• Fragrant Yellow Flowers: Produces sweet-scented yellow flowers in spring and summer. 
• Unique Shape: Has a distinctive, unusual shape compared to the typical Copiapoa tenuissima. 
• Cultivation: Prefers well-draining soil, partial shade or full sun (protected from excessive heat), and moderate watering in summer and drier conditions in winter. 
• Propagation: Can be propagated by offsets (which root easily) or grafting. 

1. Sunlight:

·         Bright and Direct Light: Monstrose Copiapoa thrives in bright, sunny conditions. Placing it close to a south-facing window, less than 1ft away, will maximize its growth potential.

·         Full Sun to Light Shade: This cactus benefits from full sun exposure, but it can also tolerate light shade.

·         Protection from Excessive Summer Heat: During intense summer heat, it's recommended to provide some protection from excessive sun exposure. 

2. Watering:

·         Sensitive to Overwatering: This species is highly susceptible to rot if overwatered, so it's crucial to water sparingly.

·         Water Sparingly from March to October: Watering should be reduced during the dormant season (colder months).

·         Weekly Watering in Summer: During summer, if the weather is consistently sunny and temperatures are high, watering can be done weekly.

·         Keep Dry in Winter: During winter, especially when night temperatures are below 10°C (50°F), reduce watering significantly or eliminate it altogether to prevent root loss.

·         Drought Tolerance: This cactus is adapted to arid conditions and can endure droughts by drawing moisture from its wool and partially burying itself in the soil. 

3. Soil:

·         Mineral-Rich and Well-Draining: Use a soil mix that is rich in minerals and offers excellent drainage.

·         Little Organic Matter: Limit the amount of organic matter, such as peat, in the soil.

·         Cactus and Succulent Mix: A well-draining cactus and succulent mix is ideal, with 70% to 80% mineral grit like coarse sand, pumice, or perlite.

·         Containers with Drainage Holes: Always use pots with drainage holes to prevent waterlogging. 

4. Fertilization:

·         Low Nitrogen Fertilizer: If you choose to fertilize, use a low nitrogen fertilizer.

·         Higher Phosphorus and Potassium: A fertilizer with a higher emphasis on phosphorus and potassium is ideal for Copiapoa species.

·         Diluted Application: Dilute the fertilizer before applying.

·         Fertilize Only in Summer: Fertilize only in summer, and only if the plant has not been recently repotted.

·         Avoid Fertilizing from September Onward: Avoid fertilizing after September to prevent lush growth that could be detrimental during the darker, colder months. 

5. Cold Hardiness:

·         Not Frost Tolerant: This cactus variety will not survive hard frost and should be brought indoors if temperatures risk freezing.

·         Protect from Temperatures Below 50°F (10°C): It should be protected from temperatures below 10°C.

·         USDA Hardiness Zones: It can be grown outdoors in USDA Hardiness Zones 9b-11b. 

6. Pests and Diseases:

·         Common Pests: Watch out for aphids, mealybugs, and spider mites.

·         Signs of Infestation: Look for cottony clumps (mealybugs), fine webbing (spider mites), discoloration, stunted growth, and sticky residue (honeydew from aphids).

·         Treatment: A strong water jet or rubbing alcohol can be used for aphids, while neem oil or insecticidal soap can help with thrips and mealybugs.

·         Mold and Fungus: Mold and fungus may appear as fuzzy growth or discolored spots.

·         Prevention: Regular inspection, isolating new plants, maintaining cleanliness, and ensuring good air circulation are proactive measures to prevent pest infestations. 

7. Propagation:

·         Seeds or Cuttings: Propagation is usually done through seeds or cuttings.

·         Grafting: Grafting onto more robust rootstock can enhance growth speed.

·         Cuttings: Offsets can be used as cuttings. Allow the cut end to form a callus before planting in a cactus potting mix.

·         Seeds: Seeds germinate in about a week at 20-27°C (68-81°F). 

Distinguishing features from other Copiapoa species:

• Monstrose Form:

The "monstrosa" designation indicates a deviation from the typical Copiapoa tenuissima shape, resulting in a more compact, branched appearance. 

• Spines:

While they have spines, they are not as prominent as in some other Copiapoa species. 

• Clumping Habit:

Copiapoa tenuissima f. monstruosa typically forms clusters of smaller stems, unlike some species that can grow as single, larger plants.