CULT: horticultural dye


After some more web-rummaging, <Signal> seems to be the most widely
available colorant for herbicides etc.  Comes in little bitty bottles or
gallons.  Touted as non-toxic, biodegradeable, nonstaining etc. in
contrast to the <dyes> which are permanent.  Signal is blue - Barry, is
that the one you are referring to?

Linda Mann east Tennessee USA zone 7/8


 

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