| Month | Cypress/Yew | London Plane | Grasses | Plantain | Olive |
|---|---|---|---|---|---|
| January | 1,005 (Very high) | 0 (Low) | 2 (Low) | 0 (Low) | 0 (Low) |
| February | 747 (Very high) | 0 (Low) | 21 (Low) | 0 (Low) | 0 (Low) |
| March | 362 (Very high) | 1,282 (Very high) | 13 (Low) | 2 (Low) | 0 (Low) |
| April | 12 (Low) | 2,830 (Very high) | 8 (Low) | 48 (Medium) | 32 (Low) |
| May | 19 (Low) | 4 (Low) | 271 (Very high) | 77 (High) | 2,085 (Very high) |
| June | 26 (Low) | 0 (Low) | 152 (Very high) | 26 (Medium) | 530 (Very high) |
| July | 1 (Low) | 0 (Low) | 47 (Medium) | 2 (Low) | 2 (Low) |
| August | 1 (Low) | 0 (Low) | 2 (Low) | 1 (Low) | 0 (Low) |
| September | 1 (Low) | 0 (Low) | 4 (Low) | 1 (Low) | 0 (Low) |
| October | 19 (Low) | 1 (Low) | 2 (Low) | 1 (Low) | 0 (Low) |
| November | 8 (Low) | 0 (Low) | 1 (Low) | 0 (Low) | 0 (Low) |
| December | 109 (High) | 1 (Low) | 2 (Low) | 0 (Low) | 0 (Low) |