Gymnocalycium mostii subsp. valnicekianum

Gymnocalycium mostii subsp. valnicekianum

Chin cactus

  • Botanical name: Gymnocalycium mostii subsp. valnicekianum
  • Common name: Chin cactus
  • Family: Cactaceae
  • Plant Type: Cactus or succulent, House plant, Evergreen
Flower colour:


Gymnocalycium mostii subsp. valnicekianum 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.


Gymnocalycium mostii subsp. valnicekianum is very easy to grow on a sunny windowsill or in a greenhouse. Water freely in summer and feed with a high potassium feed. This species is said to be hardy down to -12°C, but it will need to be kept dry over winter to ensure its survival.


Protect from the hottest summer sun, especially if grown under glass, to avoid sun scorch and stunted growth.

How to grow Gymnocalycium mostii

  • Plant size

    30cm height

    18cm spread

  • Aspect

    South facing, west facing

  • Sun exposure: Dappled shade
  • Hardiness: Frost hardy
  • Soil type: Well drained / light / sandy

Gymnocalycium mostii and wildlife

Gymnocalycium mostii has no particular known value to wildlife in the UK.

Is Gymnocalycium mostii poisonous?

Gymnocalycium mostii has no toxic effects reported.

No reported toxicity to:

No reported toxicity to Birds

No reported toxicity to Cats

No reported toxicity to Dogs

No reported toxicity to Horses

No reported toxicity to Livestock

No reported toxicity to People

Plants that go well with Gymnocalycium mostii