Finally, spring is here! Daffodils and crocuses are showing off their colors, and everyone is glad that winter is behind us. Well, almost everyone. Those with seasonal allergies are perhaps not so excited. Inquiries about seasonal allergy relief have started coming in, and I am reminded that in the South, pollen season is well under way. For the most part, the beautiful spring flowers are not the culprits when it comes to causing misery—the pollen from these plants is relatively large and they depend on insects, like bees, for pollination. But trees, like birch (pictured right), maple and alder, have tiny pollen that’s so small they do not...