Mammillaria prolifera (Mill.) Haw.
Little Candles, Silver Cluster Cactus, Strawberry Cactus, Texas Nipple Cactus, West Indian Nipple Cactus
Cactus proliferus, Neomammillaria prolifera
Mammillaria prolifera is a low-growing cactus that forms a clump of dark green, globose or cylindrical stems with conic to cylindrical tubercles with clusters of spines at the tip. The stems are up to 3.6 inches (9 cm) tall and 2.8 inches (7 cm) in diameter. Each areole bears 25 to 40 radial and 5 to 12 central spines. The radial spines are hair-like, white or yellow, and up to 0.5 inches (1.3 cm) long, while the central spines are needle-like, 0.4 inches (1 cm) long, and white, yellow to reddish with a darker tip. Flowers appear in spring. They are yellowish-white, cream-colored, or pinkish-yellow with brownish midrib and up to 0.8 inches (2 cm) in diameter. Fruits are scarlet, club-shaped to cylindrical, and up to 0.8 inches (2 cm) long.
USDA hardiness zones 9b to 11b: from 25 °F (−3.9 °C) to 50 °F (+10 °C).
How to Grow and Care
To encourage better flowering, allow the plants to enjoy a cooling period in the winter and suspend watering. Unlike many other cacti, which use their ribs as storage devices, Mammillaria feature raised tubercles, from which spines emerge. When you water, the tubercles expand to allow for increased water storage. The flowers appear from these tubercles' axils on the previous year's growth, which accounts for their interesting halo effect. The cactus mustn't be exposed to prolonged dampness and sitting water. Never let your cactus sit in a dish of water. Lastly, ensure to fertilize during the growing season for the best results.
Repot as needed, preferably during the warm season. To repot Mammillaria, ensure the soil is dry before repotting, then gently remove the pot. Knock away the old soil from the roots, removing any rotted or dead roots. Treat any cuts with a fungicide. Place the plant in its new pot and backfill with potting soil, spreading the roots out as you repot. Leave the plant dry for a week or so, then begin to water lightly to reduce the risk of root rot.
See more at How to Grow and Care for Mammillaria.
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