Sunday, October 24, 2010

Phoenix dactylifera - True Date Palm, Medjool Palm, Zahidi Palm, Deglet Noor Palm

Medjool Palms - Phoenix dactylifera
Phoenix dactylifera or The True Date Palm is an economically important tree and one of the oldest cultivated crops in the world. Dates originated in Western Asia and North Africa over 5,000 years ago. Today they are cultivated commercially in Iraq, North Africa and in the U.S. in California and Arizona.

Common cultivars of the Phoenix dactylifera used in cultivation are the Medjool, Zahidii and the Deglet Noor.

The Medjool Date Palm variety is a common sight along roadways and adorning entry ways to exclusive developments.

The trees are dioecious and often reach over 100 feet (30 m) tall or more with a gray slender trunk. The trunks can be trimmed with diamond shape leaf scars for ornamental purposes. The large greenish to bluish gray pinnate leaves often reach 18-20 feet (5.5-6 m) long. The canopy can be up to 40 feet (12.2 m) wide. Although they are very large trees, they can be grown in containers for many years before they get too large. Phoenix dactylifera is slow growing unless in a truly desert climate. Temperatures above 120 Farenheit will push this palm to grow faster (up to 3' of trunk growth per year). The True Date Palm will grow much slower in a Temperate or sub tropical climate (usually less then 2' of trunk growth). They are the most cold hardy of the Phoenix Palms and are hardy in the landscape in USDA zones 8-11.

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