Astrophytum myriostigma cv. Onzuka (classic form)

	*Astrophytum myriostigma* cv. ONZUKA	CACTUS ART NURSERY Cultivation and Mail Sale of Cacti and Succulents.

Astrophytum myriostigma cv. ONZUKA

Cultivation: Although regarded as a choice and difficult plant in cultivation it is relatively easy to grow. It is sometime seen as a grafted plant but grows very well on its own roots too. Use mineral well permeable substratum with little organic matter (peat, humus). Water sparingly from March till October and keep perfectly dry in winter at temperatures from 5 to 15 degrees centigrade. (but it is Hardy to -7°C for short periods) In the rest period no high atmospheric humidity!! Sun Exposure: Light shade to full sun. Be careful: The epidermis of ONZUKA is harder than in the normal myriostigmas and cracks easily if plants are overwatered.

*Photo of conspecific taxa, varieties, forms and cultivars of Astrophytum myriostigma:* *A. myriostigma* *A. myriostigma bicostatum* *A. myriostigma columnare* *A. myriostigma cv. FUKURYU* *A. myriostigma cv. HAKUUN* *A. myriostigma cv. HAKUUN nudum* *A. myriostigma cv. HAKUUN nudum forma cristata* *A. myriostigma cv. HAKUUN tricostatum* *A. myriostigma cv. HUBOKI* *A. myriostigma cv. HUBUKI* *A. myriostigma cv. KIKKO* *A. myriostigma cv. KIKKO nudum* *A. myriostigma cv. LAIMAKE* *A. myriostigma cv. LOTUSLAND* *A. myriostigma maculatus forma cristata* *A. myriostigma multicostatum* *A. myriostigma nudum* *A. myriostigma nudum forma cristata* *A. myriostigma nudum forma variegata* *A. myriostigma nudum cv MAIDEN BLUSH* *A. myriostigma cv. ONZUKA* *A. myriostigma cv. ONZUKA ball type* *A. myriostigma cv. ONZUKA columnare* *A. myriostigma cv. ONZUKA cristata* *A. myriostigma cv. ONZUKA + FUKURYU tricostatum* *A. myriostigma cv. ONZUKA + HAKUUN* *A. myriostigma cv. ONZUKA + KIKKO* *A. myriostigma cv. ONZUKA quadricostatum* *A. myriostigma cv. ONZUKA tricostatum* *A. myriostigma cv. ONZUKA white form* *A. myriostigma quadricostatum* *A. myriostigma quadricostatum nudum* *A. myriostigma v. strongylogonum* *A. myriostigma v. strongylogonum cv. COSTA* *A. myriostigma tricostatum* *A. myriostigma tricostatum FUKURYU type1* *A. myriostigma tricostatum nudum* *A. myriostigma variegatum*

Family: Cactaceae (Cactus Family)

Scientific name: Astrophytum myriostigma Lemaire
Original description: Cactacearum Genera nova Speciesque novae et omnium in Horto Monvillano cultarum: 4-6 1839

cv. ONZUKA

Conservation status: Listed in CITES appendix 2.

Origin: Japan, Garden origin (Nursery produced cultivar)

A. myriostigma cv. Onzuka (the classical form)

A. myriostigma cv. Onzuka f. tricostatum

Propagation: By seeds, remembering that seedlings dislike strong light and dry conditions and need to be repotted frequently. Eventually, as they become mature, they attain a maximum size of 8-10 cm (20) cm in diameter. However, old plants become senile and have a tendency to succumb to disease and a weak root system. At this stage, as is well known, they die suddenly. So, after they reach 10 cm in diameter grow them slowly, and adopt a new repotting period, using intervals of every 2 - 3 years. Additionally grow them under drier conditions or with stronger sunlight.
But plants are often grafted to accelerate growth as they would generally take at least a five years to reach maturity on their own, but the grafted plants are typical rather tall growing, compared with plants on their own roots that are usually more flat to the ground.

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