Here are two useful daily forecasts for pollen levels in the UK.
In the Netherlands forestry is undetaken by the Forestry and Wildlife Service Staatsbosbeheer: managing 250,000 hectares of land for sixteen million Dutch people. It provides some interesting comparisons to the UK where forestry governance is in the spotlight.
I wrote recently that the UK had the second-lowest forest cover of any country in Europe (see post). More specifically with 12% forest cover the UK has the same forest cover as the Republic of Moldova. Ireland and the Netherlands are equally the least-wooded countries in Europe, each with 11%