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Specific Replant Disease -Reply

Which makes the other point that IF the rose
you are removing died of *something* that may
be cause to remove the soil, but simple winter
kill, "I don't like this thing anymore," etc., does
not warrant it.  I like it.  Too late for me,
though, I just did this for about 5-6 roses this
year!!!  Not fun.

Do you know IF the rose died of *something* it
is carried on in the soil?

>>> Bob Campbell <rbcamp@neptune.on.ca>
05/27/98 10:42am >>>


Dave Amorde wrote:

> Scientists have tried for years to identify
some organism that might cause
> such a condition without success. Think
about this logically for a moment -
> when you plant a new rose in an old rose
hole, why did you remove the old
> rose? usually this happens because the plant
was not performing well. If the
> old plant doesn't perform well, but you do
nothing to improve the soil
> before replacing it, do you really think the
new one is going to do any
> better?
>   The important thing to remember is that
there is no organism or plant
> hormone in the soil that causes these
problems - all the soil needs is some
> organic matter and fertilizer, and possibly a
good flushing with water if
> salt buildup is a problem. Specific Replant
Disease is neither a soil borne
> organism nor a hormone released by the
previous plants roots. If your soil
> is well maintained, you shouldn't have to
"remove" anything in order to
> replant.
>
> Dave

I'm no rose expert, but I have in the past
planted roses in the same hole I took
another one out of (winter killed hybrid teas-
good riddance to bad rubbish) and
dropped a new plant in the same hole without
doing more than adding a good
helping of compost.  The roses have done fine
for me.  After all, when "they"
tell you to dig out a lot of earth around where
you had the rose and replace it
with new soil, what are you doing but
replenishing nutrients.  There is no proof
that roses emit growth inhibitors from their
roots the way black walnuts do.  No
doubt if your rose expired due to some
contagious virus, it would be a good idea
not to plant another rose anywhere near it's
orginal location for a number of
years.  But if there is no reason to suspect a
contagious disease there's no
reason not to plant there.

Bob Campbell
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