Gymnocalycium “T-Rex”Enlarge
Cactus · a member’s specimen

Gymnocalycium “T-Rex”

1photos
0blooms
Unique in the clubOnly 1 member grows it in the club
CategoryCactus
GenusGymnocalycium
FamilyCactaceae
About the species

Gymnocalycium 'T-Rex'

✓ Verified fact sheet Nov 9, 2026
A Japanese hybrid Gymnocalycium, named for its strongly protruding, twisted ribs. It is commonly sold in commerce as G. mihanovichii, but its exact parentage is unknown. Close relatives include the varieties ‘T-Lux’ and ‘Godji T-Rex’.
Native distribution
None, of horticultural origin (Japan). The Gymnocalycium mihanovichii group originates from Paraguay and northern Argentina.
Height / growth form
Slow-growing, with a diameter of about 8–12 cm when mature; strongly protruding, twisted ribs
Care summary

Gymnocalycium 'T-Rex'

General data for the genus Gymnocalycium – no species-specific data yetSpecies page & community data →
Waterlowgeneral genus data
Lightbright indirectgeneral genus data
Humiditylowgeneral genus data
Min. temperature8 °Cgeneral genus data
Dry winter rest · general genus dataDifficulty: ●○○○○ · general genus data✓ Not known to be toxic · general genus data

No monthly schedule is shown because cultivar-/species-level data is not yet sufficient. The general values above are guidance only.

Gymnocalycium tip: Unlike most cacti it dislikes harsh midday sun – bright filtered light is ideal.

⚠ Pets & children · genus Gymnocalycium
Not known to be toxic 🐱 🐶 🧒details →
In the grower’s words
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In chronological order

Growth photos

Gymnocalycium “T-Rex”
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