I would see if you can mix in perlite instead of coir if I were you. Perlite is cheap and because it's so light it's also easily found everywhere in the world, shipping is easy. I know it's used in fireplace insulation as well, to backfill holes around the chimneys.
I think you mis understand I’m looking for a organic component . For organic loving trees . I use pine bark thinking of supplementing the bark with coir . As I said tsuga likes aeration but has a love of organic . The problem is they respond well to long repots . So looking for organic that lasts without plugging water flow . Wondering if coir will help . It’s expanding ability when wet will help keep the compost loose
This I do also for trees in training works great but always experimenting . Thinking long term ideas for refinement for example . For example tsuga loves leaf mold manufactured from sugar maple . But it don’t last . Idea was sparked the trees together are considered climax trees in there native range . Tsuga naturally stretches it’s shallow root system in the maple leaf litter .
Nursery soil up here is mostly peat moss based . Not saying it’s great but as bonsai people we often misunderstand. Or don’t consider why it’s used . It’s cheap plentiful light and airy . Once wet stays wet for a long time almost anything will grow in it to sone degree of success . To a nursery these are all cost saving and labour ie cost saving . Merits . Gross sales total -all production expenses = profit it’s that simple . At the end of the day the above equation rules . Also consider if the results in it were to poor the above equation would be changed . So the stuff can only be so bad if it is successfully used
It seems I misunderstood, indeed. Have you heard about coco husk fibers? They're chunky and take more time to break down. But due to their fiber structure they are harder to work into the soil without air pockets.
Thank you . And yes I have some husk chunks . My understanding is the expansion or let’s say the compressed brick . Idea is possible because of the expansion properties of the product . Once wet in a soil mix .that property still exist to some extent . Ie it expands and contracts . More than other products . From say slightly damp to full wet . This feature helps aerate compost . This info came from reading about its uses and abilities not tested in bonsai
Looks interesting at least it’s not 90 percent peat like so many . Have you tried it in a pot
Yes I have. It is a planting mix so it is more chunky but all fully composted plus a bunch of other stuff. I add pumice and a good DE. It should not be used solely IMHO. It would be all the composted bark, wood, nuggets you need.
