According to a recent study (based on the 2010 world population of 6.9 billion) by The Pew Forum, there are: 1  2,173,180,000 Christians (31% of world population), of which 50% are Catholic, 37% Protestant, 12% Orthodox, and 1% other. 2  1,598,510,000 Muslims (23%), of which 87-90% are Sunnis, 10-13% Shia.
Look for the distinctive male Hazelnut flowers, called catkins, which look like 2-inch to 3-inch long yellow or brown growths at the end of the tree branches. The male flowers grow in clusters of two to three and typically form in the winter months. 1  6.
In Europe the hazelnut is mainly grown as a bush or multi-trunked shrubby tree. In Oregon, growers primarily raise hazelnuts as a single-trunked tree that grows 50 to 60 feet tall. A few of our orchards have multi-trunked trees. Hazelnut production per acre varies considerably from year to year.