[Aroid-l] Soil conditions of the Amorphophallus decus-silvae

From: "StroWi at t-online.de" <StroWi at t-online.de> on 2013.10.27 at 09:44:02 Amorphophiles, does someone know the exact type of soil Amorphophallus decus-silvae habitat? I grow two genotypes originating from seeds Troy Davis aka http://www.sumatraflora.com/ (or now http://web.archive.org/web/20050401000000*/http://sumatraflora.com/ since Troy does not run the shop anymore) sold to someone in Germany in 2005. A friend got he following information directly from Troy: "Decus-silvae all came from Gunung Halimun in West Java, the only location for this plant asfar as I am aware. They are from around 300m altitude, not very far (approx 50km) from Pelabuhan Ratuon the south coast." So, would someone know the soil type A friend who has trouble growing vegetatively propagated plants of my genotypes has in mind that he read somewhere that d-s grows on limestone born soil. Can someone confirm this? And would it indicate that d-s needs a lot of Ca-carbanate / limestone in an optimal potting mix? Would a higher pH be good? It has to be mentioned that my friend with troubles growing d-s uses reverse osmosid water (RO water) plus a good horticultural fertilizer. Another thing he noticed is that decus-silvae and gigas as well tend to wilt rather soon when grown in full sun (inside a house). So he grow both species now at a norhtern widow sill with allmost no direct sun light at all. Any comments wellcome..... Happy growing, Bernhard. --===============3408671240467588253==

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