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