hort.net Seasonal photo, (c) 2006 Christopher P. Lindsey, All Rights Reserved: do not copy
articles | gallery of plants | blog | tech blog | plant profiles | patents | mailing lists | top stories | links | shorturl service | tom clothier's archive0
Gallery of Plants
Tech Blog
Plant Profiles
Mailing Lists
    Search ALL lists
    Search help
    Subscription info
Top Stories
sHORTurl service
Tom Clothier's Archive
 Top Stories
New Trillium species discovered

Disease could hit Britain's trees hard

Ten of the best snowdrop cultivars

Plant protein database helps identify plant gene functions

Dendroclimatologists record history through trees

Potato beetle could be thwarted through gene manipulation

Hawaii expands coffee farm quarantine

Study explains flower petal loss

RSS story archive

Re: Soil mix!!/ wood by-products

  • Subject: Re: Soil mix!!/ wood by-products
  • From: "Celeste Whitlow" <politicalamazon@charter.net>
  • Date: Wed, 3 Apr 2002 22:31:01 -0600 (CST)

According to one of my horticulture textbooks ("Horticulture: Principles and
Practices" by George Acquaah), the wood by-products that should be avoided
in a media mix are cedar, walnut and eucalyptus because even heavy leaching
does not sometimes remove the toxins or allelopathic (discouraging other
plants from growing nearby) qualities of the wood.  Redwood should not be
used because it has high levels of manganese which can injure young plants.
In addition, growth inhibitors have been found in the barks of walnut,
cherry, cedar and white pine, as well.  Loblolly pine (Pinus taeda) and
slash pine (Pinus caribaea) barks do ont have growth inhibitors and thus are
the most widely used in artificial soil mixes.

Any wood by-products used should be either well-composted, nitrogenized, or
extra nitrogen will need to be given until the wood stuff starts
decomposing. This is because of the high carbon-to-nitrogen ratio of wood
products which means that the microorganisms that do the decomposing must
get their nitrogen from another source which means it puts the
microorganisms into competition with the plant for the nitrogen available in
the media/soil.

So sayeth George Acquaah...

----- Original Message -----
From: "George R Stilwell, Jr." <grsjr@juno.com>
To: "Multiple recipients of list AROID-L" <aroid-l@mobot.org>
Sent: Wednesday, April 03, 2002 12:23 PM
Subject: Re: Soil mix!!

> I've also heard that you should use cypress mulch because pine bark mulch
> attracts roaches.  ---  faery tale
> Also heard they all attract termites.  ---- grandpa's wood lore
> >From 22 years of experience, I can tell you bith of these are false
> ideas.
> probably spread by the cypress bark suppliers.
> GRSJr@worldnet.att.net
> ________________________________________________________________
> Juno offers FREE or PREMIUM Internet access for less!
> Join Juno today!  For your FREE software, visit:
> http://dl.www.juno.com/get/web/.

 © 1995-2017 Mallorn Computing, Inc.All Rights Reserved.
Our Privacy Statement
Other Mailing lists | Author Index | Date Index | Subject Index | Thread Index