The fastest grown orange tree doesn't produce edible oranges fit for human consumption. The fruit is green and bumpy and is eaten by squirrels. The tree is actually considered a shrub, with thorny branches, that can reach heights of 20 to 40 feet.
About this Author
Linda Allardice has been a freelance writer since 1985 in print and on the Web. She has written for "The Standard-Times" and "The Herald News" in Massachusetts as well as "Link-Up Magazine." She holds a Bachelor of Arts in business management from Salve Regina University in Newport, R.I.