| Month | Cypress/Yew | London Plane | Grasses | Plantain | Olive |
|---|---|---|---|---|---|
| January | — | — | — | — | — |
| February | 201 (Very high) | 0 (Low) | 17 (Low) | 0 (Low) | 0 (Low) |
| March | 740 (Very high) | 852 (Very high) | 20 (Low) | 1 (Low) | 0 (Low) |
| April | 6 (Low) | 709 (Very high) | 21 (Low) | 20 (Medium) | 5 (Low) |
| May | 6 (Low) | 3 (Low) | 231 (Very high) | 18 (Low) | 112 (Medium) |
| June | 2 (Low) | 1 (Low) | 22 (Low) | 2 (Low) | 27 (Low) |
| July | 2 (Low) | 0 (Low) | 9 (Low) | 2 (Low) | 0 (Low) |
| August | 1 (Low) | 0 (Low) | 3 (Low) | 1 (Low) | 0 (Low) |
| September | 2 (Low) | 1 (Low) | 3 (Low) | 0 (Low) | 0 (Low) |
| October | 9 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 1 (Low) |
| November | 5 (Low) | 0 (Low) | 0 (Low) | 0 (Low) | 0 (Low) |
| December | 4 (Low) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) |