How to grow Gymnocalycium mihanovichii var. friedrichii well? A detailed guide to the latest cultivation methods

Gymnocalycium mihanovichii var. friedrichii is one of the main cultivated varieties of cactus plants, also known as Red Lantern, Red Peony, etc. It is a variegated mutation of Gymnocalycium mihanovichii var. friedrichii, a variety of Gymnocalycium mihanovichii in the cactus family Cactaceae, native to South America. The color of its body remains the same throughout the four seasons, and placed on a balcony in winter when few flowers bloom, it has the decorative effect of a spot of red amid a sea of green. Let's take a look below at how to grow Gymnocalycium mihanovichii var. friedrichii well!

Growth Habits of Gymnocalycium mihanovichii var. friedrichii

Gymnocalycium mihanovichii var. friedrichii likes a sunny and warm environment. The more sun the body gets, the more vivid its color, while plants grown in shade have a dull, lusterless color. However, in the hot summer it still needs appropriate shading to avoid the strong sunlight scorching the body, and ventilation should be strengthened. When the air is dry, water should also be sprayed on the plant to prevent red spider mite damage caused by high temperature, dryness and poor ventilation. During the growing season, apply a decomposed dilute liquid fertilizer once every 10-15 days. Water thoroughly only after the soil has dried out, to avoid rootstock rot caused by long-term water accumulation in the pot, and provide appropriate air humidity so that the body's color stays fresh and moist. In winter, keep it indoors in a place with sufficient light, stop fertilizing, control watering, and maintain a room temperature above 8°C.

Propagation Methods of Gymnocalycium mihanovichii var. friedrichii

Since the body of Gymnocalycium mihanovichii var. friedrichii itself has no chlorophyll and cannot carry out photosynthesis to produce nutrients, it must be grafted and rely on the rootstock to provide nutrition in order to grow normally. Common rootstocks are Hylocereus undatus, thick flat-padded Opuntia and Pereskia aculeata, and other robust cactus plants. Grafting can be done year-round in a greenhouse, but the success rate is highest in late spring and early summer. The flat graft method is generally used, while when Pereskia aculeata is used as the rootstock, the cleft graft method is used. For propagating the crested form of Gymnocalycium mihanovichii var. friedrichii, the flat fan-shaped plant can be cut into small pieces, each with some growing points, and then grafted. For propagating the dragon-phoenix form, the twisted abnormal stems can be cut off for grafting, but the small red balls on top cannot be used alone for grafting; moreover, they can only grow into ball-shaped Gymnocalycium mihanovichii var. friedrichii, and cannot grow into the twisted, variegated abnormal stems that resemble a swimming dragon.

How to grow Gymnocalycium mihanovichii var. friedrichii well?

1. Soil: For the growing medium of Gymnocalycium mihanovichii var. friedrichii, it is best to mix grass peat, peat and Clivia soil with a small amount of perlite. The pH should be slightly acidic to neutral, preferably 6.0-6.5. When potting, do not place pot-bottom shards at the bottom of the pot; instead, place a small amount of ceramsite.

2. Temperature: The suitable growing temperature for Gymnocalycium mihanovichii var. friedrichii is 2-15°C. When the potting soil is dry, it can tolerate a high temperature of 40°C and a low temperature of 2°C.

3. Humidity: Gymnocalycium mihanovichii var. friedrichii requires 60-75%. In winter, if the indoor temperature is low, it should be kept relatively dry.

4. Light: During cultivation of Gymnocalycium mihanovichii var. friedrichii, there should be sufficient light except in midsummer.

5. Water: During cultivation of Gymnocalycium mihanovichii var. friedrichii, water should be given timely except in winter, usually maintaining medium moisture or slightly drier conditions.

6. Pests and diseases: Gymnocalycium mihanovichii var. friedrichii often suffers from stem rot and gray mold. It can be sprayed with a 2500-fold dilution of 50% carbendazim wettable powder. When high temperature, high humidity and poor ventilation occur, red spider mite damage is severe; spray with a 1000-fold dilution of 40% dimethoate emulsifiable concentrate to kill them.

Four-Season Care of Gymnocalycium mihanovichii var. friedrichii

1. Spring: When the spring temperature steadily reaches 10°C, repot once a year. After repotting and re-establishing, move it to a place with sufficient light for cultivation. With insufficient light, the lower part of the body turns green; under direct light, the more sun it gets, the redder it becomes. Spring is its peak growing season, so attention should be paid to water supply, but do not let the soil become too wet; it is best to water after the soil has dried out. On rainy days, reduce the frequency of watering.

2. Summer: When the summer temperature is hot, place it in a spot with morning and evening light and maintain sufficient water supply, but watering should be done alternately dry and wet. At the same time, spray water around it several times a day and strengthen ventilation to lower the temperature. After the temperature becomes cool in late summer, move it to a place with sufficient light for cultivation.

4. Winter: Gymnocalycium mihanovichii var. friedrichii is not cold-tolerant. In winter, the indoor temperature should be kept above 8°C, preferably around 0°C. Potted plants should be placed on a windowsill or balcony with sufficient light for cultivation, and attention should be paid to controlling water so that the potting soil stays drier; the lower the temperature, the drier the potting soil should be.