Comment by pixl97
4 hours ago
>Argue that lots of pollen leads to more allergies.
With pollen, particulate size tends to matter. Pine tree pollen is very rarely an allergen because the pollen grains are huge, and I believe the body catches and rejects these pretty easily. Tiny pollen grains and ones with particular shapes can get much deeper in the lungs and aggravate things more easily.
Also, different species flower and release pollen at different times.
A monoculture forest releases all its pollen at once, instead of a fraction of it always being in flower throughout spring/summer.