| Month | Cypress/Yew | London Plane | Grasses | Plantain | Olive |
|---|---|---|---|---|---|
| January | — | — | — | — | — |
| February | — | — | — | — | — |
| March | — | — | — | — | — |
| April | 11 (Low) | 8 (Low) | 5 (Low) | 4 (Low) | 2 (Low) |
| May | 12 (Low) | 13 (Low) | 9 (Low) | 3 (Low) | 9 (Low) |
| June | 2 (Low) | 1 (Low) | 5 (Low) | 1 (Low) | 12 (Low) |
| July | 0 (Low) | 0 (Low) | 22 (Low) | 1 (Low) | 5 (Low) |
| August | — | — | — | — | — |
| September | — | — | — | — | — |
| October | — | — | — | — | — |
| November | — | — | — | — | — |
| December | — | — | — | — | — |