One must therefore be very cautious about
trusting these trees as protectors of many of the ornamental and garden
plants. I am certain, from my own observations, that their influence on
evergreens is strongly antagonistic.
On another basis is the association between catalpas and chestnut trees
growing adjacent to one another. Constructive symbiosis apparently
develops when a young chestnut tree is planted within the radius of the
root system of a catalpa. The latter very definitely influences the
chestnut tree to grow more vigorously than it otherwise would.
I have recorded my observations of these antagonisms and friendships
between trees and plants to show that they are a reality which should be
taken into consideration in grouping and transplanting. Such warnings
are infrequent because some people may mistake them as condemnations of
certain favorite trees. I do not intend them as such, for these plants
are often valuable and worthwhile. This ability which they have
developed through the many years of their existence is a guarantee of
the sturdiness and strength of their family and species, not at all a
quality to be condemned.
CONCLUSION
If I had written this book twenty years ago, I would have prophesied a
future for nut culture in the north, full of wonder, hope and profit.
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