North American Fruit Explorers mailing list at ibiblio

["fuwa fuwa usagi" <fuwafuwausagi@muchomail.com>]

Doreen queries thusly:

Is there a website or catalog that lists how tall fruit trees grow on 
various rootstocks?

My reply:

Many do list them, and they are somewhere between "relative" to "irrelevant.

Rootstocks alone (i.e. no graft) will respond differently though consistently 
in different soil types.  For instance my "yard has 4 distinct soil types 
(Heavy, nasty clay covered by 18 inches of rich top spoil, 2 feet of rich top 
soil with a low level of organic matter on top hardpan, ungoshly rich soil 
which goes down about 5 feet, low in organic matter, and about 2 1/2 of soil 
very, very rich in organic matter.  The same rootstock without a scion varies 
greatly in these soil types.  

Then the vigor of the scion tree matters greatly.  Northern Spy is  a good 
sized tree on any rootstock.

My observation is certain scion rootstock result in unanticipated size.  
Stated differently a non-vigorous scion may grow vigorously on a certain 
rootstock or be dwarfed substantially.  For instance a seckle pear on OF X 
F33 produces a dwarf every time I tried it.  Where as Seckle on OHxF 513 or 
OHxF 282  produces a medium sized tree 10-12 ft.  Anything else I tried on 
the three rootstocks produced consistent results. 

However look at treco on line to get some idea.

the fluffy bunny



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