How to Propagate the Mammillaria hahniana Cactus? A Few Common Methods

The Mammillaria hahniana cactus belongs to the Cactaceae family. In spring, small pinkish-red bell-shaped flowers open in a ring around the ball, which is very beautiful. So, how do you propagate the Mammillaria hahniana cactus?

1. How to propagate the Mammillaria hahniana cactus?

1. Propagation by seed

Sowing propagation is carried out from April to June. The suitable germination temperature is 15-25°C, and germination occurs 7 days after sowing. After the seedlings have grown for a period, transplant them separately, planting several seedlings in one pot. Watering should be appropriate, and the soil must not be too dry. When spines begin to grow from the top of the seedlings, they can be transplanted into separate pots, one seedling per pot. Transplanting is best done in spring. The overwintering temperature for seedlings is above 10°C.

2. Propagation by cuttings

April to October is preferable. Cuttings cannot be taken during the high-temperature, rainy summer. However, in a greenhouse they can be taken in all four seasons. Use river sand plus a small amount of sawdust as the cutting medium. Use plump, well-developed offsets as cuttings; if the offsets are too small, they rot easily. The cut surface of the cutting should be smooth. After applying charcoal powder or sulfur powder to the cut surface, place it in a cool place to dry for 2-3 days. Once the sap has dried and the cut surface has shrunk, it can be planted. Do not insert too deeply when planting; it is best if the cut end just enters the soil. After planting, place in partial shade and spray water to keep the soil moist. Roots will form and it will survive in about 40 days.

3. Propagation by grafting

Use a cactus or Hylocereus undatus as the rootstock and offsets as the scion, using the flat grafting method. Do not water after grafting, and place in a cool spot. For the grafting method, see the relevant section on the golden barrel cactus.

2. Tips for Growing the Mammillaria hahniana Cactus

1. Potting soil

If the potting soil is too wet, the light too weak, or the temperature too high, all are unfavorable to its growth. The potting soil should be sand, loam, peat moss, and fine gravel in a ratio of 2:1:1:1.

2. Temperature

The usual suitable growing temperature is 24-26°C. In winter it generally needs to be brought indoors to overwinter; as long as the indoor temperature can be kept at 5-6°C, it can overwinter safely. When the indoor temperature approaches 0°C, pay attention to the cold. Besides controlling watering, it must be placed in a sunny window during the day, and kept warm at night.

3. Water and fertilizer

Do not water too much during the growing period; the sandy soil needs to dry out completely, watering on average once every 3 to 4 weeks. When watering, do not let it touch the ball. However, long-term lack of water or insufficient water supply also affects its growth. It likes light fertilizer; apply diluted fertilizer once every six months.

The Mammillaria hahniana cactus is a common potted ornamental plant. Friends who are interested can try growing one or two pots at home.