Previous Las Rozas — 2026
| Month | Cypress/Yew | London Plane | Grasses | Plantain | Olive | Birch | Privet | Alder | Maple | Mugwort | Chestnut | Composites | Hazel | Heather | Eucalyptus | Ash | Mulberry | Elm | Pine | Poplar | Goosefoot/Am | Oak | Sorrel | Willow | Nettle | Other | Unidentified |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| January | 474 | 0 | 1 | 0 | 0 | 0 | 0 | 13 | 0 | 0 | 0 | 1 | 0 | 1 | 0 | 34 | 0 | 1 | 1 | 0 | 0 | 2 | 1 | 0 | 4 | 1 | 2 |
| February | 995 | 0 | 5 | 1 | 0 | 1 | 0 | 2 | 0 | 0 | 0 | 1 | 1 | 0 | 0 | 53 | 2 | 22 | 1 | 55 | 0 | 2 | 0 | 8 | 6 | 1 | 2 |
| March | 300 | 1,801 | 6 | 2 | 0 | 1 | 0 | 1 | 6 | 0 | 0 | 1 | 2 | 0 | 1 | 17 | 7 | 9 | 4 | 102 | 1 | 9 | 1 | 3 | 10 | 8 | 2 |
| April | 7 | 346 | 49 | 4 | 149 | 2 | 0 | 1 | 375 | 0 | 1 | 2 | 0 | 1 | 1 | 1 | 87 | 2 | 94 | 2 | 3 | 1,397 | 5 | 4 | 20 | 84 | 6 |
| May | 6 | 3 | 104 | 15 | 144 | 0 | 11 | 0 | 34 | 0 | 2 | 2 | 0 | 2 | 0 | 0 | 1 | 3 | 250 | 0 | 2 | 335 | 8 | 0 | 2 | 51 | 5 |
| June | — | — | — | 11 | 29 | 1 | 13 | 0 | 5 | 0 | — | 3 | 0 | 2 | 2 | 0 | 0 | 0 | 30 | 0 | — | 35 | 9 | 3 | 3 | 15 | 4 |
| July | — | — | — | 2 | 2 | 0 | 0 | 0 | 0 | 0 | — | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 4 | 0 | — | 11 | 1 | 0 | 1 | 4 | 2 |
| August | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| September | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| October | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| November | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| December | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |