Edit. After Black September's assassination of Israeli athletes at the Munich Olympics in 1972, Prime Minister Golda Meir okays a black-box operation to hunt down and kill all involved.
Yellow pollen is produced by evergreen trees, primarily pine trees, including spruce, true cedar trees, fir trees, larch and hemlock. Although yellow pollen looks like it could cause an allergic reaction, in reality it does not trigger allergy symptoms at all. It can stain the skin and clothing, however.
Tree Pollen = Mid to late March to mid-May Grass Pollen = Mid-May to July Weed Pollen = End of June to September. With global warming on the horizon, it might be that our pollen season will get longer and longer. Hereâs what to expect: Mid to late March to mid-May.