Pack Size: 20, 100, 300
Year: 2026
Accepted Scientific Name: Mammillaria formosa Galeotti ex Scheidw.
Origin and Habitat:
Mammillaria formosa is native to northeastern and central Mexico, where it inhabits dry, rocky hillsides, limestone slopes, and open scrub vegetation. Plants grow in shallow, mineral-rich soils, often among rocks, grasses, and sparse shrubs. These environments experience warm summers, cool winters, and seasonal rainfall followed by extended dry periods. Its compact growth habit and dense spination provide protection against intense sunlight and moisture loss, making it well adapted to exposed desert and semi-desert habitats.
Description:
Mammillaria formosa is a slow-growing cactus forming rounded to short cylindrical stems approximately 3–6" tall and 3–5" in diameter. Plants may remain solitary or gradually produce offsets. The green body is covered with numerous closely spaced tubercles bearing fine, white radial spines and slightly stronger central spines, creating an attractive silvery appearance. Mature specimens produce small, pale pink to creamy-white flowers around the crown during spring and early summer, occasionally followed by reddish fruits. Its symmetrical form and dense spination make it highly ornamental.
Cultivation:
Zone: 9–11; protect from prolonged frost.
Temperature: Optimal growth at 18–28 °C. Maintain winter temperatures above 5 °C.
Growth Rate: Slow, gradually forming rounded to short cylindrical stems.
Soil: A highly mineral, fast-draining cactus mixture containing pumice, fine gravel, and limited organic matter.
Watering: Water during active growth, allowing the medium to dry thoroughly between waterings. Keep mostly dry in winter.
Fertilizing: Apply diluted cactus fertilizer every 2–3 weeks during active growth.
Light: Bright sunlight to partial sun.
Pests and Diseases: Mealybugs, root mealybugs, spider mites, and root rot.
Germination Info:
Temperature: 27 °C.
Surface Sown: Yes. Press seeds lightly onto a fine growing medium.
Germination Time: Approximately 7–28 days.
Moisture: Maintain consistent moisture without waterlogging.
Light: Bright, indirect light.
After Germination: Gradually increase ventilation and introduce brighter light as seedlings establish.
