| Month | Cypress/Yew | London Plane | Grasses | Plantain | Olive |
|---|---|---|---|---|---|
| January | 23 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) |
| February | 457 (Very high) | 0 (Low) | 7 (Low) | 0 (Low) | 0 (Low) |
| March | 86 (Medium) | 1,294 (Very high) | 5 (Low) | 1 (Low) | 0 (Low) |
| April | 11 (Low) | 480 (Very high) | 26 (Low) | 21 (Medium) | 10 (Low) |
| May | 13 (Low) | 4 (Low) | 181 (Very high) | 41 (Medium) | 57 (Medium) |
| June | 2 (Low) | 3 (Low) | 24 (Low) | 4 (Low) | 55 (Medium) |
| July | 2 (Low) | 1 (Low) | 4 (Low) | 2 (Low) | 1 (Low) |
| August | 1 (Low) | 0 (Low) | 3 (Low) | 1 (Low) | 2 (Low) |
| September | 1 (Low) | 1 (Low) | 2 (Low) | 1 (Low) | 1 (Low) |
| October | 2 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) |
| November | 2 (Low) | 1 (Low) | 1 (Low) | 0 (Low) | 0 (Low) |
| December | 13 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) |