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Origin and Habitat: Garden origin (Nursery produced hybrid)
Description: x Ferobergia sp. x Coryphantha elaphantidensSN|21533]]SN|21533]] is a horticultural tri-generic hybrid between Ferocactus, Leuchtenbergia, and Coryphantha elaphantidens. This hybrid is variable, due to the intersection of characters deriving from the parents. The length of the tubercles and spines are the more variable of the trait and a variety of forms can be found.
Tubercles: More or less long (Generally shorter and larger than in Ferobergia), three-sided, often with a basal “chin”, rather than arranged along ribs. The areoles are at the tips of tubercles. Some of this hybrids produce drops of nectar from areolar glands like Ferocactus.
Spines: Variable, mostly stouter, mostly hooked (similar to those of the Ferocactus), while other others have long, harmless, and papery spines (more similar to those of Leuchtenbergia.
Flowers: Mostly Yellow.
Blooming season: Blossoms intermittently from spring to fall.
Subspecies, varieties, forms and cultivars of plants belonging to the Ferobergia hybrids group
- х Ferobergia principis-fordii cv. Violet hort.: Made by crossing Ferocactus fordii as a female and Leuchtenbergia principis as a male. This hybrids have pink-purple flowers.
- х Ferobergia principis-lindsayi hort.: is a trigeneric hybrid between Ferocactus lindsayi as a female and Leuchtenbergia principis as a male. This hybrids have mostly pink flowers.
- х Ferobergia sp. x Coryphantha elaphantidens hort.: tri-generic hybrid between Ferocactus, Leuchtenbergia, and Coryphantha elaphantidens. Tubercles generally shorter and larger than in Ferobergia; spines mostly stouter, hooked (similar to those of the Ferocactus).
- х Ferobergia sp. ( Ferobergia x Ferocactus backcross) hort.: is a back-cross with the Ferocatus parent, performed in order to achieve plants which look much more like a Ferocatus than a Leuchtenbergia principis.
- х Ferobergia sp. ( Ferocactus spp. x Leuchtenbergia ): They are horticultural intergeneric hybrids, made by crossing one of the various species of Ferocactus (as a female) and Leuchtenbergia principis (as a male). These hybrids are very variable, due to the intersection of characters deriving from the parents.
- х Ferobergia sp. ( Ferocactus spp. x Leuchtenbergia ) f. variegata hort.: Variegated forms.
х Ferobergia sp. x Coryphantha elaphantidens Photo by: Valentino Vallicelli
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Cultivation and Propagation: x Ferobergia sp. x Coryphantha elaphantidensSN|21533]]SN|21533]] grow easily from seed in cultivation. Despite being revered by many collectors, they are not too difficult to cultivate.
Soil: Use a very quick-draining mineral mix.
Water: Water just enough, if possible from below. Water carefully. Lack of water will make the tip of the tubercles yellow. Too much water will make it rot.
Repotting: Container grown plants should be re-potted every other year for good growth when new growth starts in the spring. The Ferobergia has a strong tap root, and should have a deep pot to accommodate it. This can complicate things as a deeper pot dries out more slowly.
Hardiness: Keep dry at minimum temperature of 5° C in winter, although it will tolerate brief periods down to -5 degrees.
Exposure: It should be grown in full sun to light shade.
Propagation: Seeds or graft, occasional offsets and even cuttings of tubercles (but with little success).
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