The North Hollywood weather station — which is closer to my residence than any of the other 273 such stations throughout California — recorded well over 400 winter chill hours, explaining the ...

Tree of heaven is highly invasive and incredibly difficult to eradicate. Learn how to control ailanthus and manage its unchecked spread.

For those who add plants and trees to their garden with the purpose of attracting hummingbirds, there are some you'll want to ...

Five things to do in the garden this week: Fruit. An excellent choice for a small ornamental tree with year-round interest is the kumquat or one of its hybrids, which do not eclipse eight feet in ...

Black knot, a fungal disease, is affecting cherry and plum trees in the Greater Columbus area, likely due to recent wet weather. The disease causes hard, black knots on branches, disrupting growth ...

California’s iconic trees are so well appreciated that three national parks are named after them: Redwood, Sequoia and Joshua Tree.

The genetics behind the alternating sexes of walnut trees has been revealed by biologists at the University of California, Davis. The research, published Jan. 3 in Science, reveals a mechanism that ...

Sacramento Metropolitan Fire District officials suspect someone has been deliberately igniting ornamental trees and plants after weeks of numerous reports of suspicious fires across Carmichael.

Leaf-feeding insects are a part of life in the Peninsula's rich horticultural landscape. The region's mild Mediterranean climate and diverse variety of native and ornamental trees create an ideal ...

An excellent choice for a small ornamental tree with year-round interes t is the kumquat or one of its hybrids, which do not eclipse eight feet in height and, on dwarfing rootstocks, will stay ...