In article , "pelirojaroja"
wrote:

One of the things I like best about the shredded mulch that we use is that
it turns into rich, black dirt in a year or two. I have the deepest,
blackest and most fertile beds because of the compost action of the mulch.
Earthworm city -- they love it. Yes, it does mean that I have to put more
mulch on each year -- but that's maybe only an afternoon or two of work --
and what a great way to get nice soil!

I can't imagine the lava rock (or the rubber) being anywhere near as good.
Yes, it would last longer -- forever, I guess. But what a waste of
opportunity for making more fertile soil!

Absolutely right, & yet the industry "spin" is that unlike those awful
natural mulches that rot away into horrible humus forcing you to put down
more mulch, rubber mulch lasts FOREVER so saves you MONEY and saves you
LABOR, so surely you MUST use rubber instead.

-paghat the ratgirl

--
"Of what are you afraid, my child?" inquired the kindly teacher.
"Oh, sir! The flowers, they are wild," replied the timid creature.
-from Peter Newell's "Wild Flowers"
See the Garden of Paghat the Ratgirl: http://www.paghat.com/