Table. 3. Wintering and green rooftop application of herb plants on a green rooftop area in the central region of Korea
| Plant name | Overwintering (%) | Cold injury indexZ | Plant color in winter | Growth response | Green rooftop application |
| Irrigation | No irrigation |
| Choco Mint | 100.0 | 1 | Green | +y | - | Good |
| Pineapple sage | 0.0 | 5 | Brown | + | - | Poor |
| Spearmint | 96.0 | 5 | Grey green | + | - | Medium |
| Lemon balm | 56.0 | 3 | Grey green | + | - | Medium |
| Apple Mint | 0.0 | 5 | Brown | + | - | Poor |
| Ox-eye Daisy | 100.0 | 1 | Green | + | - | Medium |
| Roman Chamomile | 94.0 | 5 | Green | + | - | Medium |
| Thyme | 0.0 | 5 | Brown | + | - | Poor |
| Vicks Plant | 0.0 | 5 | Brown | - | + | Medium |
| Peppermint | 100.0 | 1 | Green | - | + | Excellent |
| Tansy | 100.0 | 1 | Green | - | + | Excellent |
| Rosemary | 0.0 | 5 | Brown | △ | △ | Medium |
| Lavander | 0.0 | 5 | Brown | △ | △ | Medium |
| Lemon Verbena | 100.0 | 1 | Green | △ | △ | Good |
| Feverfew | 0.0 | 5 | Brown | △ | △ | Medium |
| Heliotrope | 0.0 | 5 | Brown | △ | △ | Medium |
| Soapwort | 100.0 | 1 | Green | △ | △ | Good |
| Lady's mantle | 96.0 | 1 | Green | △ | △ | Good |
1: 0 (no injury)～20%, 2: 20～40%, 3: 40～60%, 4: 60～80%, 5: 80～100%(dead).
+: good, △: medium, -: poor.