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− | <td>Check that there is no ponding | + | <td>Check that there is no ponding within the box or trench.</td> |
<td>At least twice after storm events > 0.5 inches</td> | <td>At least twice after storm events > 0.5 inches</td> | ||
<td>Within the first 6 months</td> | <td>Within the first 6 months</td> | ||
− | <td> | + | <td>1-2 hours</td> |
− | <td>1</td> | + | <td>1, 5</td> |
</tr> | </tr> | ||
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− | <td>Check for evidence of clogging in the | + | <td>Check for evidence of clogging in the media.</td> |
<td>At least twice after storm events > 0.5 inches</td> | <td>At least twice after storm events > 0.5 inches</td> | ||
<td>Within the first 6 months</td> | <td>Within the first 6 months</td> | ||
− | <td> | + | <td>1-2 hours</td> |
<td>1</td> | <td>1</td> | ||
</tr> | </tr> | ||
<tr> | <tr> | ||
− | <td> | + | <td rowspan=2>Supplemental watering, during drier periods, particularly if keeping stormwater offline trees are established.</td> |
− | + | <td>1/week initially</td> | |
− | + | <td>During first two months of the growing season</td> | |
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− | <td> | ||
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<td>1-2 hours</td> | <td>1-2 hours</td> | ||
− | <td> | + | <td>2,3,4,5,6</td> |
</tr> | </tr> | ||
<tr> | <tr> | ||
− | <td | + | <td>As needed</td> |
− | <td> | + | <td>First growing season</td> |
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<td>1-2 hours</td> | <td>1-2 hours</td> | ||
<td>2,3,4,5,6</td> | <td>2,3,4,5,6</td> | ||
</tr> | </tr> | ||
<tr> | <tr> | ||
+ | <td>Remove any weeds present</td> | ||
<td>As needed</td> | <td>As needed</td> | ||
<td>First growing season</td> | <td>First growing season</td> | ||
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− | <td></td> | + | <td>Remove any trash or debris</td> |
− | <td></td> | + | <td>As needed</td> |
− | <td></td> | + | <td>First growing season</td> |
− | <td></td> | + | <td>1-2 hours</td> |
− | <td></td> | + | <td>1,2,3,4,5,6</td> |
</tr> | </tr> | ||
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− | <td> | + | <td>Add mulch if layer is less than 3”b</td> |
<td>As needed</td> | <td>As needed</td> | ||
<td>First growing season</td> | <td>First growing season</td> | ||
− | <td>2 | + | <td>1-2 hours</td> |
− | <td> | + | <td>4,5</td> |
+ | </tr> | ||
+ | <tr> | ||
+ | <td>Clean root collar</td> | ||
+ | <td>Annually</td> | ||
+ | <td>During growing season</td> | ||
+ | <td>1-2 hours</td> | ||
+ | <td>1</td> | ||
</tr> | </tr> | ||
<tr> | <tr> | ||
− | <td> | + | <td>Remove stakes</td> |
<td>As needed</td> | <td>As needed</td> | ||
+ | <td>End of growing season</td> | ||
+ | <td>1-2 hours</td> | ||
+ | <td>5</td> | ||
+ | </tr> | ||
+ | <tr> | ||
+ | <td>Inspect tree health</td> | ||
+ | <td>Biannually and after large storms</td> | ||
<td>First growing season</td> | <td>First growing season</td> | ||
− | + | <td>1,2,5,6</td> | |
− | <td>1,2 | ||
</tr> | </tr> | ||
<tr> | <tr> | ||
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− | <td>Check that there is no ponding | + | <td>Check that there is no ponding within the box or trench.</td> |
− | <td> | + | <td>Biannually</td> |
− | <td> | + | <td>Any time when ground is not frozen</td> |
− | <td>1-2</td> | + | <td>1-2 hours</td> |
− | <td>1</td> | + | <td>1,5</td> |
</tr> | </tr> | ||
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− | <td>Check for evidence of clogging | + | <td>Check for evidence of clogging</td> |
− | <td> | + | <td>Biannually</td> |
− | <td> | + | <td>In spring and fall</td> |
<td>1-2</td> | <td>1-2</td> | ||
<td>1</td> | <td>1</td> | ||
</tr> | </tr> | ||
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− | <td>Supplemental watering</td> | + | <td>Supplemental watering during drier periods</td> |
− | <td>As needed | + | <td>As needed or when soil is dry 3” below the surface</td> |
− | <td> | + | <td>Dry periods until roots are established</td> |
<td>1-2 hours</td> | <td>1-2 hours</td> | ||
<td>2,3,4,5,6</td> | <td>2,3,4,5,6</td> | ||
</tr> | </tr> | ||
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− | <td>Remove | + | <td>Remove any weeds present</td> |
− | <td> | + | <td>As needed</td> |
− | <td> | + | <td>During growing season</td> |
<td>1-2 hours</td> | <td>1-2 hours</td> | ||
− | <td> | + | <td>2,3,4,5,6</td> |
</tr> | </tr> | ||
<tr> | <tr> | ||
− | <td> | + | <td>Remove any trash or debris</td> |
− | <td> | + | <td>As needed</td> |
− | <td> | + | <td>Any time</td> |
− | <td> | + | <td>1-2 hours</td> |
− | <td>1</td> | + | <td>1,2,3,4,5,6</td> |
</tr> | </tr> | ||
<tr> | <tr> | ||
− | <td> | + | <td>Add mulch if layer is less than 3”</td> |
<td>Annually</td> | <td>Annually</td> | ||
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<td>During growing season</td> | <td>During growing season</td> | ||
<td>1-2 hours</td> | <td>1-2 hours</td> | ||
− | <td> | + | <td>4,5</td> |
</tr> | </tr> | ||
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− | <td> | + | <td>Remove stakes (if still present)</td> |
− | <td> | + | <td>Once</td> |
− | <td> | + | <td>End of second growing season</td> |
<td>1-2 hours</td> | <td>1-2 hours</td> | ||
− | <td> | + | <td>5</td> |
</tr> | </tr> | ||
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− | <td> | + | <td>Prune excess growth</td> |
− | <td> | + | <td> |
− | <td> | + | *Once in year 2 or 3, |
− | <td> | + | *Every three years between years 4-10, |
− | <td>2 | + | *Every five years as needed after 10 years |
+ | </td> | ||
+ | <td>End of winter or early spring</td> | ||
+ | <td>1-2 hours</td> | ||
+ | <td>2,5,6</td> | ||
</tr> | </tr> | ||
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− | <td> | + | <td>Inspect tree health and safety </td> |
− | + | <td>Biannually and after large storms</td> | |
− | + | <td>During growing season</td> | |
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− | <td> | ||
<td>1-2 hours</td> | <td>1-2 hours</td> | ||
− | <td> | + | <td>1,2,5,6</td> |
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− | <td>After long term operation of the practice, some occasional and infrequent maintenance activities might be required, such as | + | <td>After long term operation of the practice, some occasional and infrequent maintenance activities might be required, such as tree or media replacement. </td> |
− | <td>As | + | <td>As needed</td> |
<td>As needed</td> | <td>As needed</td> | ||
<td>Could be significant depending on the activity</td> | <td>Could be significant depending on the activity</td> |
Overview and schedule of general maintenance activities for tree trenches and tree boxes
Link to this table
First Year of Operation | ||||
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Activity | Frequency | Time period | Level of effort | O&M benefita |
Check that there is no ponding within the box or trench. | At least twice after storm events > 0.5 inches | Within the first 6 months | 1-2 hours | 1, 5 |
Check for evidence of clogging in the media. | At least twice after storm events > 0.5 inches | Within the first 6 months | 1-2 hours | 1 |
Supplemental watering, during drier periods, particularly if keeping stormwater offline trees are established. | 1/week initially | During first two months of the growing season | 1-2 hours | 2,3,4,5,6 |
As needed | First growing season | 1-2 hours | 2,3,4,5,6 | |
Remove any weeds present | As needed | First growing season | 1-2 hours | 2,3,4,5,6 |
Remove any trash or debris | As needed | First growing season | 1-2 hours | 1,2,3,4,5,6 |
Add mulch if layer is less than 3”b | As needed | First growing season | 1-2 hours | 4,5 |
Clean root collar | Annually | During growing season | 1-2 hours | 1 |
Remove stakes | As needed | End of growing season | 1-2 hours | 5 |
Inspect tree health | Biannually and after large storms | First growing season | 1,2,5,6 | |
After First Year of Operation | ||||
Activity | Frequency | Time period | Level of effort | O&M benefita |
Check that there is no ponding within the box or trench. | Biannually | Any time when ground is not frozen | 1-2 hours | 1,5 |
Check for evidence of clogging | Biannually | In spring and fall | 1-2 | 1 |
Supplemental watering during drier periods | As needed or when soil is dry 3” below the surface | Dry periods until roots are established | 1-2 hours | 2,3,4,5,6 |
Remove any weeds present | As needed | During growing season | 1-2 hours | 2,3,4,5,6 |
Remove any trash or debris | As needed | Any time | 1-2 hours | 1,2,3,4,5,6 |
Add mulch if layer is less than 3” | Annually | During growing season | 1-2 hours | 4,5 |
Remove stakes (if still present) | Once | End of second growing season | 1-2 hours | 5 |
Prune excess growth |
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End of winter or early spring | 1-2 hours | 2,5,6 |
Inspect tree health and safety | Biannually and after large storms | During growing season | 1-2 hours | 1,2,5,6 |
After 5+ Years of Operation (non-routine maintenance) | ||||
Activity | Frequency | Time period | Level of effort | O&M benefita |
After long term operation of the practice, some occasional and infrequent maintenance activities might be required, such as tree or media replacement. | As needed | As needed | Could be significant depending on the activity | 1,2,3,4,5,6 |
aKey to Maintenance Benefits:
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