>> Dear Plant-Ed Friends,
>> I would like to ask you a question about trees.
>> What does make some species more tolerant to having their trunks buried
> when transplanted? Is there any generalization that can be made regarding
> hardwoods, conifers and palms and their tolerance to being buried?
>> Thank you so much in advance!
>> L. Lichtenstein
> (lichtenstein at conex.com.br)
Decline and/or death of trees from planting too deep is the result of
oxygen deprivation (hypoxia). Aeration is quite important, so excess
soil and soil compaction should be avoided. Bear in mind that a clear
majority of roots are found in the upper 12" to 18" of the soil layer.
Sensitive trees tend to be those which have an abundance of shallow,
surface roots. Examples include both European and American beeches
(Fagus sylvatica and F. grandifolia) and Norway maple (Acer
platanoides). Groundcovers are also difficult to establish under these
trees, due to the competitive root systems (and dense shade).
Hope this helps!
Michael S Dosmann
dosmann at iastate.edu . . .
Graduate Research Assistant . .
Department of Horticulture . . .
Iowa State University