The pollen count hit high levels in March with warmer weather, but April’s cooler temperatures and drizzling rain should help ...

As spring advances and temperatures turn warmer, trees blossom and release pollen — the fine, yellow powder that covers cars, patios and other outdoor surfaces.

Examples of self-pollinating plants include wheat, barley, rice, tomatoes and potatoes ... for many of our crops. A pollen grain starts to grow if it lands on the stigma of a flower of the ...