MAMMILLARIA HAHNIANA CRISTATA

Mammillaria hahniana Cristata
Family：Cactaceae
Genus：Mammillaria
Mammillaria hahniana f. cristata is a unique and ornamental cactus known for its crested, fan-shaped growth and interesting texture. It thrives with bright, indirect light, well-draining soil, and careful watering.

Light
Maintaining potted Mammillaria hahniana f. cristata requires simulating the environment of tropical deserts and giving as much sunlight as possible. It is best to place it on a south-facing windowsill or balcony with more than 6-8 hours of sunlight per day.

Water
Potted Mammillaria hahniana f. cristata does not need to be watered frequently. If it is planted outdoors, it can survive only by relying on natural rainwater. However, during periods of excessive drought or heat, regular watering is also required. When Mammillaria hahniana f. cristata is grown as a potted plant on the balcony, when the soil is completely dry in warm weather, it should be watered thoroughly. If it is kept indoors, wait a few days for the soil to dry before adding water to them.

Soil
Choose a medium with good drainage and porous ventilation. You can use common cactus soil, or common peat soil, perlite and granular stones (such as akadama soil, wheat meal stone, diatomaceous earth or kanuma soil, etc.) and mix them in a ratio of 3:2:5.

Temperature
Mammillaria hahniana f. cristata is originally grown in tropical regions and is relatively afraid of cold. Outdoor ground-planted Mammillaria hahniana f. cristata can tolerate short periods of sub-zero temperatures, but when the temperature is low, watering must be stopped. Potted Mammillaria hahniana f. cristata is relatively afraid of cold. Especially when grown on a balcony, the minimum temperature should be maintained above 5 degrees Celsius. When the temperature is low in winter, the soil should be kept dry.

Fertilization
Mammillaria hahniana f. cristata is not very fond of fertilizer. The principle of fertilization is to use less rather than more, and to use thinner rather than thicker. The potting soil can be evenly mixed with one-third each of decomposed leaf soil, coal cinder, and garden soil. When potting, a small amount of crushed solid fertilizer can be placed as base fertilizer. Apply 15% fully decomposed alum water fertilizer once a month during the growing season.