How Fast Do Walnut Trees Grow?
Slightly bitter and slightly sweet, walnuts lend their distinct flavor to muffins, breads, salads, mezze and other dishes. Walnut trees grow throughout much of the United States and vary widely in their annual growth rate.
Black Walnut
The black walnut tree (Juglans nigra) has a mature height of 50 to 75 feet and can grow in hardiness zones 4 to 9. As a medium grower, this type of walnut averages 12 to 24 inches of new growth per year.
Carpathian English Walnut
The Carpathian English walnut (Juglans regia 'Carpathian') grows in hardiness zones 5 to 9. It has a faster annual growth rate of 25 inches per year, but only reaches 40 to 60 feet in height.
White Walnut
The white walnut (Juglans cinerea) also reaches a maximum height of 40 to 60 feet, but has a slower growth rate of 12 inches per year. This tree grows in hardiness zones 3 to 7.
- Slightly bitter and slightly sweet, walnuts lend their distinct flavor to muffins, breads, salads, mezze and other dishes.
- The black walnut tree (Juglans nigra) has a mature height of 50 to 75 feet and can grow in hardiness zones 4 to 9.
Grow Carpathian Walnut Trees
Select an area that provides full sun. Carpathian walnut trees do not tolerate shade. Plant other trees in the same vicinity using 30-foot-by-30-foot or 24-foot-by-24-foot spacing. Carpathian walnut trees require a pH of about 6.0 to 8.0 and smooth landscape. Water new plants regularly for the first two years. Fertilize carpathian walnut trees in the spring during active growth. If the tree retains a healthy appearance, then no more fertilization is needed. Place 2 to 3 inches of mulch around the tree's root zone. Leave about 12 inches between the base of the trunk and the mulch.
- Select an area that provides full sun.
- Place 2 to 3 inches of mulch around the tree's root zone.
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