Pears and black walnut?

The length of the interstem is not overly important in this situation. Here is some callery pear rootstocks i was growing out with their brilliant red fall folliage.


Once i grow the rootstocks out i top work them Top working Pears weather permitting
In the summer the fruits give them away
small%20callery

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It sounds like it may also depend on soil structure and chemistry:

Breaks down much faster in high pH soil than low. So, I would have less of an issue if I had stayed in Kansas than if I were to plant a walnut here in New Hampshire.

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