The English Walnut tree produces the most popular walnuts; one which is used the most often in commercially-sold foods. The nut’s origin was in Persia and that is why the English Walnut is often called the Persian Walnut tree.
English Walnut trees grow between 40-60 feet, some reaching as high as 80 feet. The tree has a round spread, providing dense shade. The tree is a fast grower, adding more than 24 inches per year, and it can have a lifespan of 150 years.
The leaves of the English Walnut tree are compound and arranged alternately along the stem. A leaf is comprised of five to nine leaflets that measure about six inches. They have smooth margins, are well-shaped and will turn bronze in the fall.
In late spring, yellowish-green male flowers emerge in hanging catkins. The female flowers appear in spikes. Neither have petals. A tree bears fruit after five to six years. The nut fruit is enclosed in a green, thin-shelled husk approximately two inches in diameter. The nut is creamy white but will eventually turn brown.
English Walnut trees prefer soil that is sandy, clay or loamy, well-drained and deep. It does best in full sunlight. Hardiness Zone: 5-9.