I noticed a lot of small twigs with leaves on them under my oak tree and became concerned about the oak. It is a large, ...

Some fruit trees are notorious for producing a big crop one year and a much smaller crop the next. Here's what to know and what you can do about it.

The saguaro cactus is the iconic plant of the Arizona borderlands, and in June and early July, its fruit ripens.

TUCSON, Ariz. — Cousins Tanisha Tucker Lohse and Maria Francisco set off from their desert camp around dawn on most early ...

Oak and cherry tree leaves have pinnate venation. Palmate Venation: The veins radiate in a fan shape from the leaf petiole. Examples include maple and sweetgum leaves.