m |
m |
||
Line 3: | Line 3: | ||
<table> | <table> | ||
<table border="1"> | <table border="1"> | ||
+ | <tr> | ||
+ | <th>Planting method</th> | ||
+ | <th>Description</th> | ||
+ | <th>Survival rate</th> | ||
+ | <th>Installation labor</th> | ||
+ | <th>Maintenance requirements</th> | ||
+ | <th>Expense</th> | ||
+ | <th>Establishment time</th> | ||
+ | <th>other pros, cons, notes</th> | ||
+ | </tr><center><font size=3>'''Comparison of most common extensive green roof planting methods'''</font size><br> | ||
+ | Link to this [Comparison of most common extensive green roof planting methods|table]]</center> | ||
+ | <table class="sortable"> | ||
<tr> | <tr> | ||
<th>Planting method</th> | <th>Planting method</th> | ||
Line 16: | Line 28: | ||
<td>Plugs</td> | <td>Plugs</td> | ||
<td>Plants in small pots</td> | <td>Plants in small pots</td> | ||
− | <td></td> | + | <td>High</td> |
− | <td></td> | + | <td>Medium</td> |
− | <td></td> | + | <td>Low</td> |
− | <td></td> | + | <td>Low-medium</td> |
− | <td></td> | + | <td>Quick, 1-2 years depending on species, plug size, and initial planting density</td> |
− | <td></td> | + | <td>Allows for most flexible and controlled planting design; can be added to green roofs started from cuttings or to pre-grown mats to increase species diversity</td> |
</tr> | </tr> | ||
+ | |||
<tr> | <tr> | ||
− | <td></td> | + | <td>Cuttings</td> |
− | <td></td> | + | <td>Small pieces of sedums that are spread across or mixed into growing medium</td> |
− | <td></td> | + | <td>Good</td> |
− | <td></td> | + | <td>Low</td> |
− | <td></td> | + | <td>Low</td> |
− | <td></td> | + | <td>Low - More than plugs, less than seed</td> |
− | <td></td> | + | <td>Quick, 1-2 years</td> |
− | <td></td> | + | <td>Less control over final look than with plugs</td> |
</tr> | </tr> | ||
+ | |||
<tr> | <tr> | ||
− | <td></td> | + | <td>Seed</td> |
− | <td></td> | + | <td>Seed</td> |
− | <td></td> | + | <td>Good</td> |
− | <td></td> | + | <td>Lowest</td> |
− | <td></td> | + | <td>Higher</td> |
− | <td></td> | + | <td>Lowest - Less than plugs or cuttings</td> |
− | <td></td> | + | <td>Longer than plugs or cuttings – typically 2-5 years depending on species </td> |
− | <td></td> | + | <td>Less control over final look than with plugs; seed cannot be allowed to dry out until germinated; more bare soil can result in higher weed pressure; need more erosion protection during establishment since soil is bare; only a limited number of species can germinate from seed on a green roof</td> |
</tr> | </tr> | ||
<tr> | <tr> | ||
− | <td></td> | + | <td>Pregrown Mats</td> |
− | <td></td> | + | <td>Plants delivered to the site pre-grown into an erosion control mat with growing medium </td> |
− | <td></td> | + | <td>Good</td> |
− | <td></td> | + | <td>Low</td> |
− | <td></td> | + | <td>Low</td> |
− | <td></td> | + | <td>Low-Medium</td> |
− | <td></td> | + | <td>Almost instant green</td> |
− | <td></td> | + | <td>Instant erosion protection if fully vegetated; precise plant composition difficult to predict; less control over final look; less species diversity possible than with plugs, can be combined with plugs to increase species diversity</td> |
</tr> | </tr> | ||
<tr> | <tr> | ||
− | <td></td> | + | <td>Modular Systems</td> |
− | <td></td> | + | <td>Plastic, metal, or degradable trays filled with growing medium and delivered to site pre-grown </td> |
− | <td></td> | + | <td>Good initially</td> |
− | <td></td> | + | <td>Low</td> |
− | <td></td> | + | <td>High </td> |
− | <td></td> | + | <td>High </td> |
− | <td></td> | + | <td>Almost instant green</td> |
− | <td></td> | + | <td>Allow for greater precision of design, some may require frequent plant replacement due to edge effect; some trays may retain heat and cause soil to dry out faster, negatively affecting plant health</td> |
</tr> | </tr> | ||
+ | |||
</table> | </table> | ||
− | [[category: | + | [[category:Table]] |
Comparison of most common extensive green roof planting methods
Link to this table
Planting method | Description | Survival rate | Installation labor | Maintenance requirements | Expense | Establishment time | other pros, cons, notes |
---|
Planting method | Description | Survival rate | Installation labor | Maintenance requirements | Expense | Establishment time | other pros, cons, notes |
---|---|---|---|---|---|---|---|
Plugs | Plants in small pots | High | Medium | Low | Low-medium | Quick, 1-2 years depending on species, plug size, and initial planting density | Allows for most flexible and controlled planting design; can be added to green roofs started from cuttings or to pre-grown mats to increase species diversity |
Cuttings | Small pieces of sedums that are spread across or mixed into growing medium | Good | Low | Low | Low - More than plugs, less than seed | Quick, 1-2 years | Less control over final look than with plugs |
Seed | Seed | Good | Lowest | Higher | Lowest - Less than plugs or cuttings | Longer than plugs or cuttings – typically 2-5 years depending on species | Less control over final look than with plugs; seed cannot be allowed to dry out until germinated; more bare soil can result in higher weed pressure; need more erosion protection during establishment since soil is bare; only a limited number of species can germinate from seed on a green roof |
Pregrown Mats | Plants delivered to the site pre-grown into an erosion control mat with growing medium | Good | Low | Low | Low-Medium | Almost instant green | Instant erosion protection if fully vegetated; precise plant composition difficult to predict; less control over final look; less species diversity possible than with plugs, can be combined with plugs to increase species diversity |
Modular Systems | Plastic, metal, or degradable trays filled with growing medium and delivered to site pre-grown | Good initially | Low | High | High | Almost instant green | Allow for greater precision of design, some may require frequent plant replacement due to edge effect; some trays may retain heat and cause soil to dry out faster, negatively affecting plant health |