Lambert LM-193 substrate is a differently screened version of their best-selling LM-3 All Purpose mix. The additional step in the screening process of the peat was done to allow this all-purpose mix to be more widely adaptable, including the utilization in 6-packs, and 50- and 72-cavity trays, and classic standard pots as well. This new mix is blended with specially selected grade of Canadian sphagnum peat moss with coarse perlite and coarse vermiculite.
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