| Month | Cypress/Yew | London Plane | Grasses | Plantain | Olive |
|---|---|---|---|---|---|
| January | 0 (Low) | 0 (Low) | 5 (Low) | 0 (Low) | 0 (Low) |
| February | 0 (Low) | 0 (Low) | 4 (Low) | 0 (Low) | 0 (Low) |
| March | 1 (Low) | 184 (High) | 10 (Low) | 8 (Low) | 0 (Low) |
| April | 2 (Low) | 58 (Medium) | 9 (Low) | 8 (Low) | 16 (Low) |
| May | 3 (Low) | 1 (Low) | 42 (Medium) | 27 (Medium) | 39 (Low) |
| June | 2 (Low) | 0 (Low) | 33 (Medium) | 11 (Low) | 12 (Low) |
| July | 1 (Low) | 0 (Low) | 13 (Low) | 5 (Low) | 3 (Low) |
| August | 1 (Low) | 0 (Low) | 3 (Low) | 1 (Low) | 1 (Low) |
| September | 0 (Low) | 0 (Low) | 3 (Low) | 1 (Low) | 0 (Low) |
| October | 1 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 2 (Low) |
| November | 8 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 1 (Low) |
| December | 369 (Very high) | 0 (Low) | 5 (Low) | 0 (Low) | 0 (Low) |