Mammillaria longimamma, commonly known as the nipple cactus, is a species of cactus in the family Cactaceae. It is native to desert and dry shrubland climates, particularly in Mexico. This succulent subshrub is known for its long tubercles and bright yellow flowers. It undergoes a dormancy period during the winter months.
Mammillaria longimamma thrives in bright, direct sunlight and prefers warm temperatures. It is well-suited to dry conditions and does not require high humidity. Water sparingly, allowing the soil to dry out completely between waterings. This cactus is relatively easy to care for and can be grown both indoors and outdoors.
Soil
This cactus prefers sandy soil with excellent drainage. A cactus or succulent potting mix is ideal. Ensure the soil dries out completely between waterings to prevent root rot.
Fertilizer
Fertilize Mammillaria longimamma with a balanced cactus fertilizer, such as a 2-7-7 formula, during the growing season. Apply the fertilizer sparingly, about once a month, to avoid over-fertilization.
Repotting
Repot Mammillaria longimamma every 2-3 years or when it outgrows its current pot. Choose a slightly larger pot with good drainage. Handle the plant carefully to avoid damaging its tubercles.
Propagation
Propagate Mammillaria longimamma through offsets or seeds. Offsets can be removed and planted in a separate pot. Allow the offsets to dry for a few days before planting to prevent rot. Seeds can be sown in a well-draining soil mix.
Pruning
Pruning is generally not required for Mammillaria longimamma. Remove any dead or damaged parts as needed to maintain the plant's health and appearance.
Toxicity
Mammillaria longimamma is not toxic to pets or humans. However, it is advisable to handle the plant with care due to its spines.
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