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− | <td></td> | + | <td>A flat-sided trunk at the base of the tree</td> |
− | <td></td> | + | <td>Encircling root restriciting the flow of water and nutrients between the roots and rest of the tree</td> |
− | <td></td> | + | <td>Excavate to check for encircling root</td> |
+ | </tr> | ||
+ | <tr> | ||
+ | <td>Bark damage near the bottom of the tree</td> | ||
+ | <td>Rodent or string trimmer</td> | ||
+ | <td>Apply mulch/trunk guard to protect from further damage</td> | ||
+ | </tr> | ||
+ | <tr> | ||
+ | <td>An elm tree with liquid oozing from the trunk</td> | ||
+ | <td>Slime flux or wetwood</td> | ||
+ | <td>Not worry about health</td> | ||
+ | </tr> | ||
+ | <tr> | ||
+ | <td colspan=3><center>BRANCHES</center></td> | ||
+ | </tr> | ||
+ | <td>An elm tree with bright yellow leaves on one or two branches</td> | ||
+ | <td>Dutch elm disease</td> | ||
+ | <td>Immediately call the university* or an arborist</td> | ||
+ | </tr> | ||
+ | <tr> | ||
+ | <td>Webs in the branches or webs covering the tips of branches</td> | ||
+ | <td>Fall webworm or Eastern tent caterpillar</td> | ||
+ | <td>Not worry about health></td> | ||
+ | </tr> | ||
+ | <tr><td>Many branch tips snipped off and laying on the ground</td> | ||
+ | <td>Squirrel damage</td> | ||
+ | <td>Not worry about health</td> | ||
+ | </tr> | ||
+ | <tr> | ||
+ | <td>Black clumps on branches of a cherry tree</td> | ||
+ | <td>Black knot</td> | ||
+ | <td>Call for advice*</td> | ||
+ | </tr> | ||
+ | <tr> | ||
+ | <td>Very little growth</td> | ||
+ | <td>Many</td> | ||
+ | <td>Call for advice*</td> | ||
+ | </tr> | ||
+ | <tr> | ||
+ | <td>Hole in trunk or branches</td> | ||
+ | <td>Many</td | ||
+ | <td>Call for advice*</td> | ||
</tr> | </tr> | ||
</table> | </table> | ||
<noinclude>[[category:table]]</noinclude> | <noinclude>[[category:table]]</noinclude> |
Tree health troubleshooting guidelines (adapted from Johnson et al., 2008).
Link to this table
If you see: | Potential cause: | You should: |
---|---|---|
A flat-sided trunk at the base of the tree | Encircling root restriciting the flow of water and nutrients between the roots and rest of the tree | Excavate to check for encircling root |
Bark damage near the bottom of the tree | Rodent or string trimmer | Apply mulch/trunk guard to protect from further damage |
An elm tree with liquid oozing from the trunk | Slime flux or wetwood | Not worry about health |
An elm tree with bright yellow leaves on one or two branches | Dutch elm disease | Immediately call the university* or an arborist |
Webs in the branches or webs covering the tips of branches | Fall webworm or Eastern tent caterpillar | Not worry about health> |
Many branch tips snipped off and laying on the ground | Squirrel damage | Not worry about health |
Black clumps on branches of a cherry tree | Black knot | Call for advice* |
Very little growth | Many | Call for advice* |
Hole in trunk or branches | Many</td | Call for advice* |