Search results
Results from the WOW.Com Content Network
Juglans nigra, the eastern American black walnut, is a species of deciduous tree in the walnut family, Juglandaceae, native to central and eastern North America, growing mostly in riparian zones. Black walnut is susceptible to thousand cankers disease , which provoked a decline of walnut trees in some regions.
Thousand cankers is a recently described disease and its involvement in tree mortality apparently is also recent. The first published note involving black walnut die-offs that likely can be attributed to TCD occurred in the Espanola Valley of northern New Mexico in 2001.
Myth: You Can't Grow Anything Near a Black Walnut Tree. Truth: While the roots of black walnut (Juglans nigra) do release an allelopathic chemical known as juglone that inhibits the growth of some ...
Walnut trees are any species of tree in the plant genus Juglans, the type genus of the family Juglandaceae, the seeds of which are referred to as walnuts.All species are deciduous trees, 10–40 metres (33–131 ft) tall, with pinnate leaves 200–900 millimetres (7.9–35.4 in), with 5–25 leaflets; the shoots have chambered pith, a character shared with the wingnuts (Pterocarya), but not ...
Juglans hindsii, commonly called the Northern California black walnut and Hinds's black walnut, is a species of walnut tree native to the western United States (California and Oregon). [ 1 ] [ 2 ] [ 3 ] It is commonly called claro walnut by the lumber industry and woodworkers, and is the subject of some confusion over its being used as ...
In 1926, instances of apple tree damage caused by both Juglans nigra and Juglans cinerea (butternut) trees were reported in northern Virginia. [4] Certain apple tree varieties displayed varying levels of resistance to walnut toxicity. In 1926, it was observed that walnut trees in alfalfa fields resulted in crop death, while grass remained ...
The population of black squirrels has since spread throughout the Pioneer Valley, with large populations existing in Amherst and Westfield. [9] During this same period, black squirrels from Canada were also released at parks in Princeton, New Jersey. [38] A black eastern gray squirrel atop a fence in Hertfordshire, U.K.
Juglans regia, the common walnut [1] or Persian walnut [2] amongst other regional names, is a species of walnut. It is native to Eurasia in at least southwest and central Asia and southeast Europe, but its exact natural area is obscure due to its long history of cultivation.