A yellow (variegated)  specimen.
 There exist several mutant variegated forms of Ferobergia that are highly prized by cactus impassioned. They are usually much slower growing than the standard form of the species.
 

Description: X Ferobergia is a horticultural intergeneric hybrid, made by crossing of a Ferocactus sp. as a female and Leuchtenbergia principis as a male. F2 hybrid means the plant of second generation is derived from cross-pollination among F1 hybrids. These have unpredictable characteristics and produce offsprings unlike themselves. It produces drops of nectar from areolar glands like Ferocactus. The variegated specimens have sectors, patches or stripes with two or more different colours, even distinct shades of green.  Plants with variegated leaves are often highly prized.
Phenology: Blossoming time: May-August

Etymology: The name of the hybrid genus " X Ferobergia " derives from  the contracted names of the two parent genera "Ferocactus" and "Leuchtenbergia " from which this plant has been originated. The  “X” before the name means “hybrid”
 

Cultivation: Prefers filtered light. Plant in a porous cactus soil with adequate drainage for best results. Water thoroughly during the growing season when soil is dry to the touch.  Less or no water during cold winter months, to prevent root loss.  Protect from frost.

Propagation: Seeds or graft

Photo of forms and cultivars of Ferobergia:

• Ferobergia
• Ferobergia PRI-FOR
• Ferobergia (Variegated forms)