This is what the fruits of the walnut look like
For a long time, the fruits of the walnut tree were considered drupes in botany. Today we know, however, that it is not just colloquial, but really real nut fruits.
also read
- The leaves of the walnut tree in a detailed portrait
- Interesting facts about the walnut tree's heyday
- Walnut fly - a portrait of the pest
In 2006, experts from the Ruhr-Universität Bochum found out that the green shell that surrounds the nut (the core) is not - as originally assumed - part of the pericarp, but is instead formed from leaf organs.
The nut itself can look very different in terms of shape and size. Sometimes it is round, sometimes oval-cylindrical, sometimes egg-shaped and sometimes beak-shaped. It is 2.5 to eight centimeters long and 2.5 to five centimeters wide - with a shell thickness of 1.8 to 2.2 millimeters.
Interesting facts about nut yield and harvest
Walnut trees usually only bear fruit from an age of around ten to 20 years. It takes even longer to produce exceptionally good yields: from around 40 years of standing, the trees produce rich harvests. In old age, however, the yields decline again.
In addition to age, the following factors also play a role:
- Location
- variety
In addition, walnut trees do not fruit equally well every year - whether you can look forward to a lot of fruit depends a lot on the weather.
Exciting: large-crowned trees bring yields of up to 150 kilograms of nuts (mind you)!
Here is an overview of the average nut yield per year (per tree):
1st to 15th year of standing: 0 kg * (whether good or bad location)
16th to 25th year of standing: 10 or 7 kg (good or bad location)
26th to 35th year of standing: 25 or 15 kg
36th to 60th year of use: 45 or 22 kg
61 to 80 years of standing: 55 or 13 kg
81 to 100 years of standing: 32 or 13 kg
* If there are already yields, then only very low (a few hundred grams).
Notes on harvest
In our latitudes, the fruits ripen in September and October. Harvesting is easy as the fruits fall to the ground on their own.
