Help with 5-1-1 Soil Mix

Donnie_Mac(Ks 6A)January 24, 2013

I have searched the forms and not found this answered.

I am making the 5-1-1 mix for containers.

In each bag of pine bark while laying flat there is what looks like an inch or more of dust. While screening I have determined that this dust is small particles smaller than one eighth and larger than one sixteenth of an inch.

Volume wise there is as much of these small particles as of the larger pieces of bark. Does this go into the mix also? All of it or part of it?

Thanks for any help.

This post was edited by Donnie_Mac on Thu, Jan 24, 13 at 19:14

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tapla (mid-MI z5b-6a)

Yes, it all goes into the 5:1:1 mix; but if there are a significant volume of fines, it might be appropriate to eliminate the peat and perhaps increase the amount of perlite. Can you post a picture of the bark so we can sort of get an idea of what you're working with?


    Bookmark   January 24, 2013 at 9:31PM
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Donnie_Mac(Ks 6A)

Thank you, Al. The picture shows all the fine particles.

    Bookmark   January 24, 2013 at 10:16PM
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Donnie_Mac(Ks 6A)

This is after screening with an eighth inch mesh. It really is about half of the volume. I couldn't figure how to post two pictures.

I thought this might be way too much fine particles for the mix.

Donnie Mac

    Bookmark   January 24, 2013 at 10:19PM
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tapla (mid-MI z5b-6a)

I think you would be ok to use it as is, but eliminate the peat. Add 1 part of perlite to 5 parts of bark, and a half cup of lime per cu ft of lime/cu ft of volume and you should be fine.


    Bookmark   January 24, 2013 at 11:18PM
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Donnie_Mac(Ks 6A)

I am gearing up for the new season.

Al, Thank you for the help.

    Bookmark   January 24, 2013 at 11:24PM
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Does mine look accurate.

    Bookmark   April 24, 2013 at 8:24PM
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