my drake elm has lenticular wounds about the
trunk and limbs. my arborist said it was just
damage from gnawing squirrels. help?

Reply to post by marian maurin, on May 06, 2003 at 08:09:56:

The bark on some parvifolia elms naturally have pronounced depressions that look like lenticels. Are the edges jagged or smooth? Round or irregular? Oozing sap or dust?

Reply to post by Guy, on May 06, 2003 at 08:09:56:

Does it look different from these pictures?

Reply to post by Guy, on May 06, 2003 at 08:09:56:

mark, they appear smooth and absent of sap or dust.
when the tree was pruned there were dark patches in
the limbs, a sign of decay. however, the foliage
looks great. ideas?

Reply to post by Mark Goodwin, on May 08, 2003 at 06:49:24:

my drake elm has that characteristic peeling bark
but mine also has what looks like a canker. it
sort of looks like closed parentheses "()"
lenticular wounds about the trunk and limbs.
no sap or dust seems to be coming from them.
help?

Reply to post by marian maurin, on May 08, 2003 at 15:21:19:

The linked site has a section at the very bottom describing a trunk canker of young trees growing in excessively wet soil. Is your soil too wet?
Another site refers to a Fusarium and Diplodia canker disease:
http://lsvl.la.asu.edu/plb362/cmartin/ulmusparvifolia.html
Finally, the following site has a picture of the cankers and dicusses the issue in some detail, discounting Fusarium and Diplodia as causal factors.
http://ucce.ucdavis.edu/freeform/slosson/documents/1983-19862190.pdf
I am simply searching for information on the Internet. I do not have direct experience with this problem.