Gymnocalycium mihanovichii, or “chin cactus,” is a low, round cactus genus native to South America. Easy to care for, the plants are highly prized for their lovely flowers and, in other cases, for their grafted forms in striking colors such as the Gymnocalycium mihanovichii (usually grafted on Hylocereus stock). Healthy growth and blooms come from attentive care.

Number of plants	1
Growing month	Feb to Oct
Temperature	above 30C
Sun	Under white shade net
Blooming period	spring

Gymnocalycium cacti like direct, and indirect sunlight. They do not like the strong direct sun like some desert cacti due to sunburning. Ideally, a south- or east-facing window with a light shade at midday is best. Grafted ones, particularly red, yellow, or pink cap ones, need a little less light.

Water Gymnocalycium sparingly, and let the soil dry out slightly between waterings. Root rot is the leading cause of death. Water 7-10 days in the spring and summer growing season. Water once a month during winter when the plant is asleep. Use a pot with drainage so water will have somewhere to drain out to.

You will require a cactus potting mix with drainage. You can make one by combining potting soil with perlite, sand, or pumice. Repot in a pot with holes to avoid water accumulation. Young Gymnocalyciums will require repotting every 2–3 years to renew the soil and stimulate growth.

Also These cacti like warm temperatures of 65–85°F (18–29°C). They can tolerate brief cold to 40°F (4°C) but will need to be moved indoors if it gets any colder. Stay away from humid places because excess moisture will stimulate fungal diseases.

Use a weak cactus fertilizer (low nitrogen) and give a monthly feed when the plant is in growth. Never feed the plant during winter months when the plant will be dormant.

Firstly Propagation is normally by taking offsets (pups) from the mother plant or sowing seeds. Grafted Gymnocalyciums need to be regrafted on new rootstocks when required.

Overwatering → Root rot; water less frequently.

Too much sun → Brown dry patches of sunburn; relocate to dappled shade.

Pests → Look for mealybugs and spider mites; spray with neem oil or insecticidal soap.

With proper care, Gymnocalycium cacti will bloom and reward you with beautiful flowers lastly.