Pollen count for the region Katwijk
poplar
hazel
alder
plantain
oak
mugwort
ragweed
grasses
birch
willow
rye
rumex
beech
poplar
hazel
alder
plantain
oak
mugwort
ragweed
grasses
birch
willow
rye
rumex
beech
poplar
hazel
alder
plantain
oak
mugwort
ragweed
grasses
birch
willow
rye
rumex
beech
poplar
hazel
alder
plantain
oak
mugwort
ragweed
grasses
birch
willow
rye
rumex
beech
poplar
hazel
alder
plantain
oak
mugwort
ragweed
grasses
birch
willow
rye
rumex
beech
poplar
hazel
alder
plantain
oak
mugwort
ragweed
grasses
birch
willow
rye
rumex
beech
