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[SG] Greensand with other perennials


Hi All;

I've been reading the posts on Greensand with much interest as I have
tried to amend clay soil by adding peat, builders sand, compost, leaf
mold, and other things. Has anyone had unfavorable results using
greensand around perennials other than hosta? Also does anyone know if if
affects the ph of the soil? I had some concerns about the comment
regarding it being  and unrenewable resource. Does its harvest adversely
affect some population?

TIA

Carmel Matsushita  Queens, NY zone 6/7



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