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  1. W

    a good soil?

    thnx for the reply rockm. hmm. river gravel=pencil eraser sized smooth washed pebbles commercially sold in garden centers, nothing else added. Alternatively same size pebbles collected from western mountain rivers/creeks several years ago that have been displayed in screened bottom bowls in...
  2. W

    a good soil?

    Hey there from a newbie. would a mixture of pea size lava rock, river gravel, orchid soil/bark mix (sifted of fines) and diatomaceous earth (not powder type) be a good all purpose for japanese red maple and river birch? Thanks for any help...
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