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holes or other obstructions on the sides that prevent the roots from being lifted out of the pot
I use 1 tsp
Augustine Orchid Society
vermiculite
Small Sponge Rock - Perlite
Large Sponge Rock Size:Mini Bag holes or other obstructions onSponge rock, also known by the name perlite, is a very common ingredient in orchid mixes and for good reason. Sponge rock decreases compaction of mix, increases aeration and retains moisture. Sponge rock is a volcanic glass that expands when heated and becomes very porous. Large sponge rock, #4, is best combined with other large chunk media.
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