| Month | Cypress/Yew | London Plane | Grasses | Plantain | Olive |
|---|---|---|---|---|---|
| January | 0 (Low) | 0 (Low) | 10 (Low) | 0 (Low) | 0 (Low) |
| February | 0 (Low) | 0 (Low) | 53 (Medium) | 0 (Low) | 0 (Low) |
| March | 22 (Low) | 3,276 (Very high) | 42 (Medium) | 10 (Low) | 0 (Low) |
| April | 16 (Low) | 268 (High) | 36 (Medium) | 38 (Medium) | 13 (Low) |
| May | 34 (Medium) | 44 (Medium) | 74 (Medium) | 38 (Medium) | 298 (High) |
| June | 14 (Low) | 0 (Low) | 91 (High) | 24 (Medium) | 246 (High) |
| July | 7 (Low) | 0 (Low) | 16 (Low) | 4 (Low) | 6 (Low) |
| August | — | — | — | — | — |
| September | 1 (Low) | 0 (Low) | 5 (Low) | 3 (Low) | 2 (Low) |
| October | 2 (Low) | 4 (Low) | 4 (Low) | 1 (Low) | 1 (Low) |
| November | 7 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 1 (Low) |
| December | 128 (High) | 0 (Low) | 8 (Low) | 0 (Low) | 0 (Low) |