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