Read the text. Blame male trees for your allergies Scientists think they have found what causes people to sneeze and suffer runny noses and itchy eyes. Tom Ogren, a California horticulturalist, suggests that we may suffer allergies because in cities, we plant male trees along streets. Male trees are chosen over females because the latter produce seed pods and fruits that need to be cleaned up. Male plants don't require such maintenance, but they produce great amounts of pollen, and the pollen is what causes the hay fever reactions in many people. Blame male trees for your allergies. Speak upmagazine