Al's 5-1-1/Gritty Mix - Colorants in the Pine Bark ?
This newbie has been poring through the tapla 5-1-1 and Gritty threads, and am beginning to appreciate the concepts behind them.
Only thing I haven't noticed (or have missed) in the posts was mention of colorants in the pine bark.
I was looking into trying Al's 5-1-1 for vegetables in containers next season, and it seems that nothing in the big and medium stores (particle size and suitability aside) is not dyed in some way. Seems it's a selling point for a "mulch" (which is the only pine bark around here so far).
As "safe" as the colorants may be rated, think, I'd prefer natural bark for this vegetable use (wouldn't give it a thought if the mix was for ornamental plants).
Comments or advice would be appreciated.