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Three part question re: Iron

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8-Nov-2005	#1
bonsaimaniac bonsaiTALK Expert Join Date: Dec-2004 Location: Portland, OR Country: USA USDA Zone: 8 AHS Heat Zone: ? Posts: 167	Three part question re: Iron The first question, are pine or maples effected by Iron in the soil? The second question, what amount and what compound of iron is an issue? I have found some very interesting old volcanic rock which is a great mix of colors. This is not pumice or rock like you may use in bonsai soil. It is heavy, has large bubble chamber, mixed metals and seems to have sulfur deposites. The third question would be whether this rock would leach metals and prevent it from being used in a root over rock style? Not sure if anyone will be able to answer these questions but go ahead and spectulate. most likely the only way to know will be to use with some cheap nursery stock.

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8-Nov-2005	#2
TreeBay Tips:5¢ Advice:Free *MODERATOR GROUP* Join Date: Aug-2001 Location: Silicon Valley Country: USA USDA Zone: 9 AHS Heat Zone: 4 Posts: 9,737	I don't think you are going to have a problem with iron. Here's another opinion: http://www.ibiblio.org/rge/archive/990418_27628.html Regards, Matt __________________ Want to be a seller on bonsaiAUCTIONS? Get authorized today! bonsaiTALK: Over 100,005.36 Megabytes Served this Month!

8-Nov-2005	#3
bonsaimaniac bonsaiTALK Expert Join Date: Dec-2004 Location: Portland, OR Country: USA USDA Zone: 8 AHS Heat Zone: ? Posts: 167	Thank you for the link I think that answers the question

9-Nov-2005	#4
Paul Phillis bonsaiTALK Journeyman Join Date: Nov-2004 Location: Rural NSW Country: Australia USDA Zone: medit. AHS Heat Zone: ? Posts: 46	Iron may not be a problem to plants but other more hazardous metals may be present and any elemental sulfur, seen as a yellow powder or a smell like rotten eggs, would be of serious concern. Not all volcanic rock is stable when kept continuously moist as in bonsai pots, where any free metals can leach out of the porous material. Test it first by growing other less important plants in it, not your prized bonsai. Paul

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