The real walnut (bot. Juglans regia) usually reaches an impressive height - and over the years also an impressive width. So it stands out from every tree stand. Fully grown walnut trees reach an average height of 15 to 25 meters, some even approaching the sky a little more. But: It will take a few years before the huge splendor occurs. This article provides you with detailed information about the annual growth and development of the walnut.
How fast does a walnut tree grow per year?
The annual growth of a walnut tree depends on the species/variety, age and location. Seedlings grow slowly, while grafted varieties grow 50-100 cm per year. Growth decreases after the 30th year. Lime and nutrient-rich soils promote growth.
Growth per year depends on various factors
How high the annual growth actually is depends on several factors:
- Species/Variety
- Age
- Location
Species/Variety
A seedling (freshly germinated young plant) initially grows very slowly (i.e. in the centimeter range). Only from the third year onwards does it shoot up one to two meters per year.
In contrast, refined varieties usually grow around 50 to 100 centimeters per year.
Age
In general, the walnut tree holds back in its first two years of life - but then it picks up speed until its 30th year.
Then the annual growth slows down again.
In this context it is worth mentioning that in the first three decades of its existence a walnut tree grows almost exclusively in height.
Then the treetop finally makes its grand appearance and grows wider. This process lasts until about the 40th year of life.
The main phase of fruit formation also begins.
Finally, growth decreases from the 70th to 80th year onwards - the aging phase sets in (with declining yields).
Location
Depending on how good or bad the soil and nutrient supply are, the walnut tree grows faster or slower.
Limestone and nutrient-rich loam and clay soils promote growth.
Note: Cutting does NOT have a decisive influence on growth.
