Back again to the all knowing group mind to suck some more knowledge from
the experts. I have read in many places not to burn plywood scraps in the
fireplace because of the gasses the glue gives off when burning, but I have
never seen anything about plywood mulch being harmful. Does any body know or
have ideas about any harm from plywood sawdust? Thank you for any and all
I am a nobody, and no body is perfect therefore I am perfect
Sawdust in general is bad mulch because it takes nitrogen out of the soil as
it decays. I am guessing that hardwood mulch is okay because it takes so
much longer to decay, but don't really know that.
Nor do I have any idea if plywood dust is worse than wood dust.
I have been spreading my sawdust in the garden area between the raised
beds (NOT in the raised beds!) and the grass is just as green as
anywhere else for 2 years now. If it will hurt flowers or shrubs, I
don't know but I would doubt it. Unless it changed the PH dramatically.
You might want to spread some nitrogen first but I doubt that sawdust
used as mulch sucks it up out of the ground.
This is a combination of oak, oak ply, 5 different kinds of regular ply,
birch, birch ply, maple, popular and pine. there is some folklore (that
should raise a stink) about walnut or black walnut but I don't use any
of that, yet.
BRuce <BRuce> wrote:
:> :>>have ideas about any harm from plywood sawdust? Thank you for any and all:>>replies. Larry
Plywood contains a lot of glue, and some formaldehyde, I think, so I'd
call a plywood manufacturer.
: there is some folklore (that
: should raise a stink) about walnut or black walnut but I don't use any
: of that, yet.
Walnut shavings and dust are seriously toxic to horses:
In addition, walnut trees produce a natural herbicide called juglone,
which I imagine would mean walnut is a very poor choice for
-- Andy Barss
Help on the nitrogen issue mayhap, but think of all the weed seeds you'd be
introducing into the mulch that's supposed to suppress weeds...
Well, unless you have one of those artificial, chemically sustained
monoculture lawns with nothing but grass growing in it.
Me, I have a crop of dandelions with a few tufts of grass mixed in. :)
Michael McIntyre ---- Silvan < email@example.com>
Linux fanatic, and certified Geek; registered Linux user #243621
From what I have read, done and heard from the Saturday gardening specialist
on Saturday radio, sawdust can be very good mulch. It does take nitrogen
from the soil as it decays. It was suggested to mix some high nitrogen
fertilizer with the sawdust if used directly as a mulch. How much, I don't
know. It is much better to compost the sawdust first. Sawdust by itself
doesn't decompose very fast. There are some liquid additives that can be
obtained from the local gardening center for composting dry leaves that aid
in enhancing the decay process. Also, you can mix it with other compost
material such as kitchen scraps. Sawdust from Walnut and treated lumber
should not be used. I don't know about ply and mdf, but personally, I
wouldn't use it unless it is small amounts mixed in with regular sawdust in
the dust collector.
At home, I apply straight sawdust over the whole garden after the plants are
up. I don't mix anything with it or compost it first (too lazy), and garden
produces well every year.
If you pile the sawdust outdoors where it can get rain, after 6 months
you can use it for mulch without it taking much nitrogen. Partially
composted sawdust is great for blueberry bushes. You can help the
compost process by adding lawn clippings which is high in nitrogen.
I've read in multiple different places that you
- can use sawdust as it is a good organic mulch
- should not, as it attracts termites
So I think the jury is still out on this one.
As for the dark brown mulch you buy in the store - it is cedar shards,
and is naturally termite-resistant because of cedar's natural thujone
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