When it comes to growing walnuts for their delicious seeds, there are three main types that are commonly cultivated. Each of these walnut species has its own unique characteristics and origins, making them interesting choices for gardeners and landscapers alike.
1. Persian (or English) Walnut (Juglans regia): The Persian walnut, also known as the English walnut, is the most well-known and widely cultivated walnut species. It originates from Iran and has been cultivated for centuries for its large, flavorful nuts. The Persian walnut tree is a deciduous tree with a broad, spreading canopy. Its leaves are compound and serrated, providing a beautiful and lush appearance in the landscape. The nuts of the Persian walnut have a thin shell that is easily cracked, revealing the delicious, meaty kernel inside. This species is known for its high-quality nuts and is commonly used in cooking and baking.
2. Black Walnut (Juglans nigra): Native to eastern North America, the black walnut is a prized tree for its beautiful wood as well as its flavorful nuts. This species is known for its tall stature and large, pinnately compound leaves. The nuts of the black walnut have a thick, hard shell that can be difficult to crack, but the effort is worth it for their rich, earthy flavor. Black walnut trees can be a bit more challenging to grow, as they produce a chemical called juglone that can inhibit the growth of certain plants around them. However, if planted in the right location, they can provide a valuable addition to the landscape.
3. Japanese Walnut (or Heartnut) (Juglans ailantifolia): The Japanese walnut, also known as the heartnut, is native to Japan and is a lesser-known but interesting species to consider. It gets its name from the heart-shaped nuts it produces, which have a thin shell that is easy to crack. The heartnuts have a mild, sweet flavor and are often enjoyed fresh or used in baking. The Japanese walnut tree has a more upright growth habit compared to the Persian and black walnut, making it a good choice for smaller gardens or landscapes. Its attractive foliage and unique nuts make it a popular choice for those seeking something a little different.
The three types of walnuts commonly grown for their seeds are the Persian (or English) walnut, the black walnut, and the Japanese walnut (or heartnut). Each of these species has its own unique characteristics and flavors, providing a diverse range of options for gardeners and landscapers. Whether you’re looking for a tree with a broad, spreading canopy, a tall and stately specimen, or a more compact and upright tree, there is a walnut species to suit your needs.
