Pack Size: 20, 100, 300
Year: 2026
Accepted Scientific Name: Mammillaria bombycina Quehl
Common Name: Silken Pincushion Cactus
Origin and Habitat:
Mammillaria bombycina is native to Mexico, particularly the mountainous regions of Aguascalientes and Jalisco. It inhabits rocky slopes, cliffs, and dry scrublands, frequently growing in crevices and shallow pockets of mineral-rich soil. These environments experience warm summers, cool winters, and seasonal rainfall followed by extended dry periods. The species is adapted to rocky, well-drained conditions and is especially recognizable for its attractive combination of silky white spines and darker hooked central spines.
Description:
Mammillaria bombycina is a highly ornamental cactus forming rounded to short cylindrical stems approximately 3–8" tall and 2–4" in diameter. Mature plants frequently produce offsets, developing dense clusters. The green body is covered with prominent conical tubercles bearing numerous fine, silky white radial spines and stronger reddish-brown central spines, several of which are distinctly hooked. White wool develops between the tubercles, particularly near the growing crown. Brilliant pink to magenta flowers appear in attractive rings around the crown during spring and summer.
Cultivation:
Zone: 9–11; protect from prolonged frost.
Temperature: Optimal growth at 18–28 °C. Maintain winter temperatures above 5 °C.
Growth Rate: Moderate, gradually developing dense clusters.
Soil: A highly mineral, fast-draining mixture containing pumice, fine gravel, and limited organic matter.
Watering: Water thoroughly during active growth, allowing the medium to dry between waterings. Keep mostly dry during winter.
Fertilizing: Apply diluted cactus fertilizer every 2–3 weeks during active growth.
Light: Bright light to partial sun, with protection from extreme afternoon heat.
Pests and Diseases: Mealybugs, root mealybugs, spider mites, and root rot.
Germination Info:
Temperature: 27 °C.
Surface Sown: Yes. Press seeds lightly onto the growing medium.
Germination Time: Approximately 7–28 days.
Moisture: Maintain consistent surface moisture.
Light: Bright, indirect light.
After Germination: Gradually increase ventilation and introduce brighter light as seedlings mature.
