Thanks, Robert, for the Ph story. Actually, most plants will tolerate
fertilizer with Phs far from their optimum tolerance, so I don't worry too
much about too high or low on the acidity scale. I think the wide variety
of fertilizers on the market is for the benefit of the manufacturers - not
the growers.
----- Original Message -----
From: "Robert J. Baran"
To:
Sent: Tuesday, May 31, 2005 10:31 PM
Subject: [IBC] pH value for bonsai.
Per pg. 75 of The Beginner's Guide to American Bonsai by Jerald P. Stowell
(Kodansha, 1978),
"Briefly, the pH requirements of natural vegetation are as follows:
pH less than 3.7: heath or bog thickets
pH 3.7-4.5: tamarack, black spruce, hemlock, aspen, birch
pH 4.5-5.5: the majority of conifers
pH 5.5-6.9: the bulk of deciduous forests
pH 6.9-8.0: neutral to alkaline grasslands
All plants have a pH tolerance within which they will still survive:
for instance, the optimum pH range for the genus Malus (the apple) is
5.5-6.5. However, they have been found growing in soil that tests as low,
or acidic, as 4.0 and as high, or alkaline, as 8.0."
In my notes I also have a list of the "optimal pH ranges for common
flowers, vegetables, trees, shrubs and grasses commonly planted around our
homes and gardens." This is per the Sunbelt Nursery Group, Inc. If you
have a specific species I might be able to give you a more specific
figure.
Cordially,
Robert J. Baran
Sunset Zone 10
Jo Trojer wrote:
Hi, Anyone have a list with the different PH values preferred pro
species? How important is it for bonsai to keep the correct PH value?
Here in Innsbruck we have a high lime content in our water, does this
affect the PH value after a long period? Thanks for any help Jo Trojer -
RCI President/Coach Innsbruck - Austria www.rugby-innsbruck.at
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************************************************** ******************************
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+++++ Questions? Help? e-mail +++++
************************************************** ******************************
++++Sponsored, in part, by Kevin Bailey++++
************************************************** ******************************
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+++++ Questions? Help? e-mail
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