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SP1784 Melocactus diamantinus HU174 Mercedes de Diamantina, Minas Gerais, Brazil

Melocactus diamantinus HU174 Mercedes de Diamantina, Minas Gerais, Brazil
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€ 9,90
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SP1784 € 9,90 1

Descrizione

# # # PIANTA SPECIALE # # # (Esemplare selezionato)
Diametro 4 cm. Pianta estremamente decorativa con lunghe spine rosso-brune e grandi areole lanose bianche. Rara!

Family: Cactaceae (Cactus Family)

Melocactus diamantinus
(Sometime labelled "diamantineus" or "diamantinensis")

Scientific name:  Melocactus neglectus var. diamantineus

Origin:  Chapado do DIAMANTINA, Minas Gerais (Brasilia)

Field number:  HU 174

Conservation status: Listed in CITES appendix 2.

Common NameTurk’s cap,  “melon cactus” (or simply “melon”)

Synonyms:   

  • Melocactus neglectus hort.
  • Melocactus bahiensis v. neglectus
  • Melocactus oreas v. bahiensis
  • Melocactus oreas ssp. bahiensis
  • Melocactus bahiensis (Britton & Rose) Lützelburg, 1923

Melocactus diamantinus
Quite variable regarding the length of the spines  and cultivated plants from different provenience will be remarkably different.

Description: The plants labelled as Melocactus diamantinus (diamantineus)  are extremely  beautiful with very long red spines and large white woolly areoles.
Stem: Gl
obose, up to 15 cm in diameter with 10 to 12 ribs and a cephalium with many brown bristles.

Remarks: The most remarkable part of a Melocactus is its cephalium a bristle-coated structure on the summit of the plant, only Melocactus, and the similar genus Discocactus possesses this type of permanent, apical, hat-like appendage. It’s only when a Melocactus reaches maturity that the cephalium begins to grow. Cylindrical, with a diameter distinctly smaller than that of the plant body below, the cephalium will keep growing for the rest of the plant’s life, but the body of the plant stops growing the moment the cephalium starts to form. . As the plants age the cephalium doesn’t increase in circumference it will steadily grow taller

Cultivation: These cacti are not the easiest things to grow and aren’t plants for beginners.
Melocactus diamantinus
grows from April to October, it can’t endure long stretches of total dryness, and also too much water will rot it, as its weak root systems tends to be inefficient at sucking up water from wet soil. Nonetheless, again as a result of their tropical origins, they need a fair amount of water, but allow the soil to dry quite a bit before watering again. Melocactus rests from October to April but can’t stand cold, or even fairly cool temperatures, so is indispensable to keep it above 8-12°C at all times, severe damage or death occurring at temperatures that the great majority of cacti wouldn’t mind in the least and prefer more frequent water in winter than other cacti, say once a month. Do not feed in winter.
The root system is weak and generally resents being repotted and can take a long time to re-establish. The soil mix should be very quick draining, prefers very bright light, not as much as the most arid growing cacti, but plenty nonetheless.

Propagation: Exclusively by Seeds. Sow in February-march in a light, sandy, porous soil. Cover germinating tray with glass to prevent seed from drying out. Germination is most successful at a temperature of 18 to 22° C.