Pollen count for the region Heathrow
elm
birch
poplar
ash
oak
yew
willow
nettle
hazel
grasses
alder
plantain
mugwort
rumex
elm
birch
poplar
ash
oak
willow
nettle
hazel
grasses
yew
alder
plantain
mugwort
rumex
elm
birch
poplar
ash
oak
willow
nettle
hazel
grasses
yew
alder
plantain
mugwort
rumex
elm
birch
poplar
ash
oak
willow
nettle
hazel
grasses
yew
alder
plantain
mugwort
rumex
birch
poplar
ash
oak
elm
willow
nettle
hazel
grasses
yew
alder
plantain
mugwort
rumex
birch
poplar
ash
oak
elm
willow
nettle
hazel
grasses
yew
alder
plantain
mugwort
rumex
oak
elm
birch
willow
poplar
ash
plantain
nettle
mugwort
hazel
grasses
yew
rumex
alder
