Most's Gymnocalycium

Most's Gymnocalycium Care

Gymnocalycium Mostii

What is the plant

Gymnocalycium mostii is a globose, dark green cactus native to montane regions of Argentina. The spines can vary between plants – with differing combinations of curved, straight, long, short, weak and strong. It produces white flowers with a flushed red centres that are 7cm wide, in spring and summer.

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Humidity

Normal

Lighting

Full Sun

Temperature

15°C - 30°C

Hardiness zone

7 - 10

Difficulty

Easy

Hibernation

Cold Period

How to Care for the Plant

Water
Allow the soil mix to become nearly dry between waterings, but then water thoroughly. Good drainage is essential since leaving the plant sitting in water can lead to root rot. During the summer months, the plant might need frequent watering, especially if it has been moved outside
Fertilizer
You do not need to regularly fertilize your ruby ball cactus plant, but you should dose it with a cactus fertilizer every month during its growing season (April to September). Suspend feeding during the dormant winter period.
Sunlight
The red ball tops are tolerant of more shade than many cacti and dislike direct sunlight. By contrast, the stock green cacti on the bottom are often light-lovers. Look for a bright area, but not so bright that the color of the top begins to wash out.

Disease diagnosis

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Soil
A rich, fast-draining cactus mix with a low pH is ideal. Make sure the soil meets the needs of the host cactus on the bottom.
Temperature
The upper ruby ball scion is hardy in USDA plant hardiness zones 11 through 12, while some of the rootstock species (such as night-blooming cereus or blue myrtle) are hardy in zones as low as 8 or 9. During the winter, the recommended temperature range is between 50 and 60 degrees Fahrenheit.
Popularity
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