| Month | Cypress/Yew | London Plane | Grasses | Plantain | Olive |
|---|---|---|---|---|---|
| January | 567 (Very high) | 0 (Low) | 4 (Low) | 0 (Low) | 0 (Low) |
| February | 1,343 (Very high) | 0 (Low) | 3 (Low) | 0 (Low) | 0 (Low) |
| March | 203 (Very high) | 3,419 (Very high) | 15 (Low) | 30 (Medium) | 0 (Low) |
| April | 37 (Medium) | 653 (Very high) | 42 (Medium) | 58 (High) | 296 (High) |
| May | 33 (Medium) | 15 (Low) | 75 (Medium) | 45 (Medium) | 825 (Very high) |
| June | 4 (Low) | 1 (Low) | 96 (High) | 353 (Very high) | 4 (Low) |
| July | 5 (Low) | 1 (Low) | 59 (Medium) | 104 (Very high) | 1 (Low) |
| August | 1 (Low) | 1 (Low) | 8 (Low) | 11 (Low) | 1 (Low) |
| September | 33 (Medium) | 6 (Low) | 3 (Low) | 3 (Low) | 0 (Low) |
| October | 40 (Medium) | 5 (Low) | 3 (Low) | 1 (Low) | 1 (Low) |
| November | — | — | — | — | — |
| December | — | — | — | — | — |