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Thread: Something to do with used CP mix

  1. #1

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    Lightbulb Something to do with used CP mix

    I wander around general gardening blogs a lot, and one of the topics that comes up every now and then is hypertufa, the super-light-weight concrete substitute that people shape into various kinds of custom containers for their plants. Looking at a typical recipe (this one from Wikipedia), it sure looks like a good way to use up old CP mix (particularly if you use perlite instead of sand).

    • 3 parts Type I Portland cement
    • 4 parts Sphagnum
    • 5 parts perlite

    (I always hate tossing any perlite mix into the garden because of all the little white perlite floaters that go everywhere and look like a styrofoam bomb went off...)

    PS: I'd add that I wouldn't use any of these containers for CPs since the containers would be pretty alkaline. But there are other plants in the world. Really.

  2. #2
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    Very cool. I will certainly give this a try sometime!

  3. #3
    MICKEY's Avatar
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    you could seal it with pool seal or epoxy paint etc and use it with cps

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