
50 Litre bags of Donex graded bark ready for delivery.
Graded Bark Sizes
-
2 mm - 4 mm
- 4 mm - 8 mm
- 8 mm - 12 mm
Machinery at work grading our organic bark.
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Graded Bark
Donex have all grades of bark
available, from Growing Media to
top quality landscape material. We also can supply the very
popular Cambium for ground cover and playground areas.
In regard to using graded bark as a growing medium most producers
take freshly removed bark from the logs
and artificially compost it with
a process that involves using water and nitrogen fertilisers. This
is a rather rapid process and is completed within 12-15 weeks. Effectively
this process deactivates toxins
and neutralises nitrogen that consumes
micro-organisms. Donex have
found that this does not remain stable and after a period of time
pH ratings can decrease and nitrogen
draw-down can begin to increase causing a slowdown in growth.
Our supply of graded bark comes from unlimited
access to bark which has been left to naturally
decompose over a period of fifteen to twenty years. This
means we can offer a completely inert
growing media which is highly stable
and most importantly, is completely organic.

The site and equipment at work
grading bark.
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