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Mammillaria theresae

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Scientific Name

Mammillaria theresae Cutak

Synonyms

Mammillaria saboae var. theresae

Scientific Classification

Family: Cactaceae
Subfamily: Cactoideae
Tribe: Cacteae
Subtribe: Cactinae
Genus: Mammillaria

Description

Mammillaria theresae is a small cactus, usually single headed, though some specimens offset in age. The stem is subglobose to cylindrical, olive green, with magenta-red tint, up to 2 inches (5 cm) tall and up to 1.2 inches (3 cm) in diameter. Pink flowers, up to 2 inches (5 cm) and up to 1.4 inches (3.5 cm) in diameter. Stigmas pale yellow. Mainly blooms in may, but also sporadically though out summer.

Mammillaria theresae

Photo via c1.staticflickr.com

How to Grow and Care

If you can grow cacti and succulents successfully, you can likely grow the popular Mammillaria without too much trouble. 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, the Mammillaria feature raised tubercles, from which spines emerge. When you water, the tubercles will expand to allow for increased water storage. The flowers emerge from the axils of these tubercles on the previous year’s growth, which accounts for their interesting halo effect. It’s imperative that the cactus is not exposed to prolonged dampness and sitting water. Never let your cactus sit in a dish of water. Lastly, make sure to fertilizer during the growing season for the best results.

Repot as needed, preferably during the warm season. To repot a cacti, make sure the soil is dry before repotting, then gently remove the pot. Knock away the old soil from the roots, making sure to remove any rotted or dead roots in the process. 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.

Origin

Native to Mexico.

Links

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