| Month | Cypress/Yew | London Plane | Grasses | Plantain | Olive |
|---|---|---|---|---|---|
| January | 0 (Low) | 0 (Low) | 26 (Low) | 0 (Low) | 0 (Low) |
| February | 0 (Low) | 0 (Low) | 19 (Low) | 0 (Low) | 0 (Low) |
| March | 13 (Low) | 158 (High) | 21 (Low) | 7 (Low) | 0 (Low) |
| April | 11 (Low) | 6 (Low) | 20 (Low) | 15 (Low) | 1 (Low) |
| May | 30 (Medium) | 0 (Low) | 92 (High) | 39 (Medium) | 284 (High) |
| June | 13 (Low) | 0 (Low) | 48 (Medium) | 54 (High) | 254 (High) |
| July | 5 (Low) | 0 (Low) | 25 (Low) | 6 (Low) | 0 (Low) |
| August | 1 (Low) | 0 (Low) | 4 (Low) | 2 (Low) | 0 (Low) |
| September | 1 (Low) | 0 (Low) | 3 (Low) | 2 (Low) | 1 (Low) |
| October | 2 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 0 (Low) |
| November | 6 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) |
| December | 338 (Very high) | 0 (Low) | 4 (Low) | 0 (Low) | 0 (Low) |