Research in the field of walnuts has led to a wide variety of species adaptation which has been beneficial for both walnut producers and walnut wholesalers. In this regard there are certain factors which should be taken into account:

  • The productivity of the tree,
  • The durability against cold weather and the sun,
  • Healthy development of the tree, durability against diseases,
  • The size of the fruit,
  • A thin shell which is easy to crack open,
  • The ease of separation from the shell, as well as the inside color. The amount of fat shouldn’t be more than 70% in dry walnuts.

The Chandler Walnut, Eastern Europe Walnut and Hartley Walnut are only some examples of walnuts in which these factors play a role. Please find below some species in more detail.

  • Payne
    The Payne walnut is very important in Califonia. Since it is a very productive species, it is still produced today. The fruit ratio on the tree is usually between 80-90% and the nut itself weighs around 5.7 grams. The size of this species falls within the medium-small classification. This walnut in-shell is highly popular.
  • Hartley
    The Hartley has a productivity ratio of 5-10%. The reason this species is popular is not due to its productivity but because of its very high quality. Therefore this species is generally marketed as a naked walnut and used as organic food ingredients.
  • Franquette
    The Franquette is of French origin and widely produced in California. Since the trees are very big and productivity is low, the amount of walnuts on one tree is limited. These walnuts are harvested late in the season and recently are not very popular anymore due to the abovementioned reasons. It is highly possible that your walnut supplier does have this species available.
  • Serr
    Productivity of this species may vary depending on ecological circumstances and irrigation. Although the productivity ratio is between 30-50% and the walnut itself is quite big, it can be a bit of a wildcard in terms of harvesting, since it should be harvested quite early. Depending on the type of growth these walnuts may be labeled as an organic biowalnut.
  • Ashley
    This species has been around since 1960 and is quite productive, since it is very resistant to parasites and bacteria. It does require heavy care for a good development but is very similar to the Payne species on many perspectives.
  • Sunland
    The fruit ratio on the tree is usually between 80-90% and the nut itself weighs around 10,4 grams with its shell. It is a highly productive species but very sensitive to parasites.
  • Trinta
    The fruit ratio on the tree is usually between 80-90% and harvesting should be done in the midseason. The color of the inner walnut isn’t that great but the size of the walnut itself is quite big.
  • Chico
    This species is very sensitive to parasites and bacteria but is very productive with a ratio of 90-100%. If you are looking for organic wholesale this species might be a good option.
  • Vina
    The productivity ratio is between 80-90% and the walnuts are generally harvested earlier in the season. These organic walnuts are suitable for various uses.
  • Tehama
    The productivity ratio varies between 70-80% and the walnut sizes are quite big. When harvested too late, the walnut may get damaged. An average walnut of this species weighs around 6 grams. If the shells come loose to quickly, it is possible that the inside of the nut is damaged due to bugs.
  • Amigo
    This species shares some similarities with the Chico and isn’t very popular. Since the walnut is very sensitive to parasites, this species isn’t produced widely. Specialist organic nut importers though may have this option available for purchase.
  • Howard
    The productivity ratio varies between 80-90%. The tree gives a lot of fruit on branches without leaves and it therefore takes a little longer to harvest them. In order to improve the productivity but also the size of the walnut it is important to trim the trees frequently.
  • Chandler
    This species is especially suitable for the use of only the inner nut, for example in the production of coated walnuts and has a bright future ahead.
  • Rego
    This is a Portuguese species and is quite productive with a ratio of 80-90%.

As you can see, bulk & wholesale nuts come in a wide variety and your choice for either one of them is really dependent on what you want to do with the walnuts after purchase. If you are buying bulk walnuts, always ask for information about the growth and produce stage.

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