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Crushed marble in soil?

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Crushed marble in soil?

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6-Mar-2005	#1
joakimlinden bonsaiTALK Expert Join Date: Jul-2004 Location: Skövde Country: Sweden USDA Zone: 7 AHS Heat Zone: ? Posts: 155	Crushed marble in soil? I found this in quite small boxes at a local supermarket and wondered if this might be a good additive in soil. I found out through google that it can raise the pH level and I don't really know if that's desireable... Any thoughts? __________________ Best regards, Joakim

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6-Mar-2005	#2
Vance Wood bonsaiTALK ArchMaster Join Date: Sep-2002 Location: Roseville Michigan Country: USA USDA Zone: 5/6 AHS Heat Zone: ? Posts: 2,373	I would not use the stuff, it will break down and will cause the soil to become very basic, good only for a select number of Alpine conifers.

6-Mar-2005	#3
joakimlinden bonsaiTALK Expert Join Date: Jul-2004 Location: Skövde Country: Sweden USDA Zone: 7 AHS Heat Zone: ? Posts: 155	Ah, I didn't even imagine that it could break down... Thanks for the input. __________________ Best regards, Joakim

6-Mar-2005	#4
Henke bonsaiTALK Journeyman Join Date: Feb-2005 Location: Gothenburg (west coast) Country: Sweden Posts: 45	O, bloody bollocks... I just repotted my ch elm with it... I don't think it will break down for a long time but it's not very beneficial if it's basic. Damn, new repot... __________________ "I'm but a picturesque feature of the general misery"

6-Mar-2005	#5
Vance Wood bonsaiTALK ArchMaster Join Date: Sep-2002 Location: Roseville Michigan Country: USA USDA Zone: 5/6 AHS Heat Zone: ? Posts: 2,373	You'll just have to keep an eye on the PH. I hope you used plenty of organics in the soil. Be hopeful Elms like to be repoted every year, or at least can tolerate the procedure.

7-Mar-2005	#6
rockm bonsaiTALK ArchMaster Join Date: Oct-2003 Location: Fairfax, Va Country: USA USDA Zone: 7 AHS Heat Zone: ? Posts: 4,561	Another reason for not using it--crushed marble is used for packing underneath brick walkways. I used 300 lbs of it to lay a granite block pathway in my backyard a while back. Marble tends to break into flat, or at least not really angular chips. That allows it to compact really well to form a firmer substrate for brick or pavers to lay on. That compacting capability is probably about the worst thing you want in bonsai soil...

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