[Date Prev][Date Next][Date Index]

Define mulch first: RE: E-M:/ tires for mulch?

Enviro-Mich message from Lowell Prag <lprag@mail.msen.com>

What this discussion ignores is the purpose of mulch. The main thing 
is to use something that will feed the plants and trees, in addition 
to suppressing weeds and helping to maintain moisture in the soil.

For that, compost is best, not shredded rubber from tires.

A note in passing:

wood chips and other such materials that are high in carbon, are also not
good for mulch unless certain precautions are taken, as the naturally
occurring bacteria which will then proceed to compost the mulch material,
need nitrogen to do so and since the material is high in carbon not
nitrogen, the bacteria end up taking the nitrogen from the soil which in
turn is not good, as the plants and trees need this nitrogen for growth.

Hence, if one uses wood chips and other high carbon materials, a nitrogen
source should also be added to the mulch, like grass clippings, etc. as
otherwise, you will stunt your plants and trees during the time that it
takes for the mulch to compost.

Last, in addition to the fact that shredded rubber does not feed the
plants and trees, over time, it will get spread throughout ones garden,
jammed in lawn mowers, washed down to side walks and then into sewers and
water treatment plants, etc.


I cannot imagine why someone would use shredded rubber for mulch.

Lowell Prag

ENVIRO-MICH:  Internet List and Forum for Michigan Environmental
and Conservation Issues and Michigan-based Citizen Action.   Archives at

Postings to:  enviro-mich@great-lakes.net      For info, send email to
majordomo@great-lakes.net  with a one-line message body of  "info enviro-mich"