| Month | Cypress/Yew | London Plane | Grasses | Plantain | Olive |
|---|---|---|---|---|---|
| January | 231 (Very high) | 0 (Low) | 4 (Low) | 0 (Low) | 0 (Low) |
| February | 291 (Very high) | 1 (Low) | 5 (Low) | 0 (Low) | 0 (Low) |
| March | 108 (High) | 1 (Low) | 7 (Low) | 0 (Low) | 0 (Low) |
| April | 4 (Low) | 7 (Low) | 3 (Low) | 0 (Low) | 0 (Low) |
| May | 1 (Low) | 2 (Low) | 30 (Medium) | 5 (Low) | 6 (Low) |
| June | 1 (Low) | 0 (Low) | 28 (Low) | 7 (Low) | 17 (Low) |
| July | 1 (Low) | 0 (Low) | 26 (Low) | 2 (Low) | 1 (Low) |
| August | 2 (Low) | 0 (Low) | 2 (Low) | 2 (Low) | 1 (Low) |
| September | 1 (Low) | 0 (Low) | 2 (Low) | 1 (Low) | 0 (Low) |
| October | 4 (Low) | 0 (Low) | 2 (Low) | 1 (Low) | 0 (Low) |
| November | 7 (Low) | 0 (Low) | 2 (Low) | 2 (Low) | 0 (Low) |
| December | 23 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) |