Alternative(s) to Nitrolized Redwood Shavings

[fernonvernon]

Am looking to prepare a pot/container mix for a palm tree. Recipe calls for 15% "nitrolized redwood shavings" among other things (i.e. 15% Pine Bark, 15% peat moss, 10% amended topsoil etc.).

Seeing as how nitrolized redwood shavings are a component I'm pretty much unable to find/locate, I was wondering if anyone had some thoughts regarding a worthwhile/feasible alternative or sub.

30% Pine Bark seems like a stretch, and I'm vaguely certain the two (Pine Bark and Nitrolized Shavings) aren't really serving the same purpose. Do have access to a product called 'Ecopeat' which looks sort of like peat moss but seems to be a form of (am assuming) decomposed/composted pine.

Was thinking I might split the 15% by combining Coir, Fine Bark and the aforementioned 'Ecopeat'

Aside from hoping to make the math work, I'd really appreciate any info/input re what one might replace this unobtainable ingredient with. 

Edited February 28, 2018 by fernonvernon

[Missi]

Not sure, but I know Ecopeat is just coconut coir.

[fernonvernon]

Thanks. That's certainly what every online search I've looked into seems to yield definition wise as well. I'm thinking sure it's a (re)label-issue of sorts (since the product's sourced from the Ukraine, and most EcoPeat I've come across is being prepared in Sri Lanka) 

Oddly enough this particular bag/product states that it is derived from pine wood bark. 

Guess I'm wondering if nitrolized redwood shavings (which I've no experience w/ whatsoever) are composted redwood shavings. And whether some other composted wood might have a somewhat similar function.