Horticultural grade vermiculite

thinkstoomuch(6)March 8, 2010

Hi All,

I purchased vermiculite for my first square foot garden. I had a tough time locating a source that carried it in 4 cf bags. Now I'm worried because I read a post from someone who stated that they bought the wrong vermiculite. Can someone ease my worry? Is horticultural grade acceptable for Mel's mix? On the package, neither coarse or medium is checked off, but in perm marker, someone wrote "VC". I assumed that to mean vermiculite - coarse. Help.

Kim

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luke3026

I think "VC" might mean "very course." But either way, I think your stuff will work fine. Horticultural grade means safe for plant cultivation so that stuff is the right stuff. This is only my second year of SFG, so maybe someone more experienced can chime in if I'm wrong.

Here is a link that might be useful: Garden blog

    Bookmark   March 8, 2010 at 4:51PM
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angela12345(7b NC Mixed-Humid)

Horticultural grade is good. Although, not necessary depending on the vermiculite manufacturer, the same exact contents may be packaged into different bags for different marketing/applications. My bags did not say the particle size either, so I looked up the manufacturer on the internet from the bag and called them to find out the size. For the manufacturer that distributes in this area, their horticultural grade comes in coarse & medium.

    Bookmark   March 8, 2010 at 5:02PM
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thinkstoomuch(6)

Thanks for the replies. I feel better. I might contact the manufacturer just out of curiousity.

    Bookmark   March 8, 2010 at 6:10PM
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curt_grow

Kim; From what I understand Horticultural grade = coarse and what Mel recommends in his book.That's what I used and it came from the local green house (what they use). Feeling better now?

Curt :-)

    Bookmark   March 8, 2010 at 7:03PM
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thinkstoomuch(6)

I do feel better now. Thank you!

    Bookmark   March 8, 2010 at 8:13PM
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angela12345(7b NC Mixed-Humid)

Sorry, don't mean to be disagreeable, but our area horticultural vermiculite comes in medium & coarse ... http://palmettovermiculite.com/products.html

Although, I used medium last year and it was ok.

    Bookmark   March 8, 2010 at 8:52PM
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curt_grow

Not a problem for me angela. Thank you for clearing that up.

Curt :)

    Bookmark   March 9, 2010 at 6:15PM
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