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Some plants and trees are resistant to juglone including some species of maple (Acer), birch (Betula), and beech (Fagus). [citation needed] It is highly toxic to many insect herbivores. However, some of them, example Actias luna (Luna moth), can detoxify juglone (and related naphthoquinones) to non-toxic 1,4,5-trihydroxynaphthalene.
Juglans californica, the California black walnut, also called the California walnut, or the Southern California black walnut, [1] is a large shrub or small tree (about 20–49 feet (6.1–14.9 m) [3]) of the walnut family, Juglandaceae, endemic to the Central Valley and the Coast Range valleys from Northern to Southern California.
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 ...
The Petrified Forest is a petrified forest located in Sonoma County, California, in the United States. It is the only petrified forest in California from the Pliocene. [3] [2] It also has the largest petrified trees in the world. [4] The forest is now open to the public to visit after restoration from damage caused by the Napa and Sonoma fires ...
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 the root stock ...
The aphids can cause stunted growth in trees with heavy infestations rendering badly damaged trees unsellable. [1] Other species of adelgids also infest fir trees, those include the pine bark adelgid, the Cooley spruce gall adelgid (Adelges cooleyi), and the eastern spruce gall adelgid (Adelges abietis). [3] Another serious pest are bagworms ...
California Native Plants for the Garden, Carol Bornstein, David Fross, and Bart O'Brien, Cachuma Press; California Native Trees and Shrubs, Lee W. Lenz, Rancho Santa Ana; Ceanothus, David Fross and Dieter Wilken, Timber Press; Complete Guide to Native Perennials of California, Glenn Keator, Chronicle Books
The plant pathogenic fungus Leucostoma kunzei (formerly Valsa kunzei) is the causal agent of Leucostoma canker (also known as Cytospora canker or spruce canker), a disease of spruce trees found in the Northern Hemisphere, predominantly on Norway spruce (Picea abies) and Colorado blue spruce (Picea pungens).