• The macadamia was discovered in Australia in 1858 and introduced to Hawaii in 1881.
• It is grown on a large scale only in Hawaii and Australia but also is produced in South Africa and Central America.
• There are approximately 40 described varieties, most of them in Australia.
• The trees grow in warm, subtropical conditions. Mature trees can withstand temperatures as low as 25-26 degrees Fahrenheit.
• They often are sold as salted nuts packed in glass jars. Their largest use is in confections.
• Hawaii produced 30,000 tons of macadamia nuts, with a farm value of $44.4 million, in 2005-06.
• In 2005-06, U.S. imports totaled 8.9 million tons; exports amounted to 784 tons.
• The edible kernel is enclosed in a thick, hard shell that is encased in a husk.
• The kernel is 72 percent to 78 percent oil.
SOURCES: University of Florida, U.S. Department of Commerce, U.S. Department of Agriculture