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Re: Pale Leaves - Reply

Oh, dear, I'm afraid I wasn't clear in my first reply.  I meant to say that
there was more than one cause for pale leaves with green veins.

Sulfur makes the soil more acid.  If your soil is already at the proper pH
for roses (about 6.5) you don't want to add sulfur.  If the soil is
saturated and the plants are oxygen starved, the only thing I know to do is
wait until it dries out or move the plants.  Adding iron and sulfur won't
help.

It's always a good idea to get a soil test before adding anything that will
affect the pH level.

Lynn
hlbarton@execpc.com

From: Doug and Karen Hegre <hegre@enetis.net>
To: rose-list@eskimo.com <rose-list@eskimo.com>
Date: Thursday, June 25, 1998 4:53 PM
Subject: Re: Pale Leaves - Reply


    I have been having the same thing on my climbers and other roses.  We
have had a cool wet year so far....so, I will add iron and sulfur.  Karen
Zone 4

    ----------
    > From: Lynn Barton <hlbarton@execpc.com>
    > To: 'rose-list@eskimo.com'
    > Subject: RE: Pale Leaves - Reply
    > Date: Thursday, June 25, 1998 11:46 AM
    >
    > Though pale leaves with green veins are a sign of iron deficiency,
    > chlorosis is usually a problem where soils are alkaline.  The iron may
be
    > in the soil, but the high pH "locks" it up.  Most soils east of the
Miss
    > are neutral to acid.  Before adding iron and sulfur, I would (and did)
    > have a soil test.
    >
    > A few years ago I noticed this pale leaf syndrome on a few of my
roses.
    >  After testing the soil and finding it to have a slightly acid pH and
    > plenty of iron, I went to the local extension office for suggestions.
The
    > most probably cause in my garden was saturated soil, which decreases
the
    > oxygen available to the plants.  The first year I noticed the problems
we
    > were having exceptionally heavy rainfall, 5 or more inches in a few
hours.
    >
    > Marlynn, have you had more than average rainfall this year?  We have
over
    > here in Illinois and I am again noticing the problem on some of the
    > rugosas as well as other plants.
    >
    > Lynn, Z4b
    > hlbarton@execpc.com
    >
    > On Wednesday, June 24, 1998 5:08 PM, C. Walworth
    > [SMTP:cwtwo@cyberhighway.net] wrote:
    > > Marlynn Marcks wrote:
    > > >
    > > > Does anyone know what could be causing my Blaze climbers to have
    > > > yellow
    > > > leaves with green veins?  The lightest leaves are at the top and
    > > > sometimes are almost white.  Where the leaves are yellow the
blossoms
    > > > are also lighter.  These are 8 years old and haven't done this
before.
    > > > Marlynn Marcks
    > > > zone 6 Michigan
    > > >
    > > >
    > > iron iron iron. but you've gotta add sulpher for them to use it.
Cathy,
    > > CR, zone 6a.
    >
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