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: rock

Exactly Kitty, that is exactly what it is.....the rock enables the soil to be 
well drained, yet at the same time, retain some moisture daily from the dew.  

The soil does stay much cooler under mulch of any kind than it does without.
Malcom Beck and Howard Garrett did a study on this some years ago.  Forgot 
the exact statistics, but the difference in temp from the mulched soil to the 
non-mulched was amazing.  The moisture retention was much greater as well.

zone 9
Texas Gulf Coast

In a message dated 6/26/2003 11:02:27 PM Central Standard Time, 
gardenchat-owner@hort.net writes:

> Again, I'm just guessing here, but it seems the matter of rocks/stones of
> any kind holding moisture or preventing moisture retention is relative to
> the plant and conditions under discussion.   Stones do create more air
> spaces and better flow for quicker drainage for plants that are grown in
> wetter conditions than those to which they would be better suited.  But even
> these plants that like it well on the dry side require some moisture to
> survive.   I would think that some moisture - just enough to make this type
> of plant happy - adheres to the stone's surfaces.  And since they keep the
> ground beneath cool, this little bit doesn't evaporate out, therefore is
> available to the plants.  The gravel mulch keeps the plants from
> asphyxiating in too much available water, but does help to keep the minimum
> at the ready.
> But then, you also say it gets warm.  Is it warm 2 or 3 inches down?

To sign-off this list, send email to majordomo@hort.net with the

Other Mailing lists | Author Index | Date Index | Subject Index | Thread Index

 © 1995-2017 Mallorn Computing, Inc.All Rights Reserved.
Our Privacy Statement