| Month | Cypress/Yew | London Plane | Grasses | Plantain | Olive |
|---|---|---|---|---|---|
| January | 4 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) |
| February | 12 (Low) | 0 (Low) | 4 (Low) | 0 (Low) | 0 (Low) |
| March | 53 (Medium) | 6 (Low) | 6 (Low) | 0 (Low) | 0 (Low) |
| April | 4 (Low) | 142 (High) | 24 (Low) | 26 (Medium) | 3 (Low) |
| May | 2 (Low) | 16 (Low) | 57 (Medium) | 36 (Medium) | 16 (Low) |
| June | 2 (Low) | 0 (Low) | 63 (Medium) | 13 (Low) | 39 (Low) |
| July | 0 (Low) | 0 (Low) | 16 (Low) | 1 (Low) | 1 (Low) |
| August | 0 (Low) | 0 (Low) | 3 (Low) | 1 (Low) | 1 (Low) |
| September | 0 (Low) | 0 (Low) | 1 (Low) | 1 (Low) | 1 (Low) |
| October | 8 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) |
| November | 231 (Very high) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) |
| December | 55 (Medium) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) |