One ragweed plant can release as many as one billion grains of pollen! Posted on June 12, 2013November 10, 2013 by admin One ragweed plant can release as many as one billion grains of pollen! VN:F [1.9.22_1171]please wait...Rating: 0.0/5 (0 votes cast)VN:F [1.9.22_1171]Rating: 0 (from 0 votes)