This marvelous tree has a straight trunk with smooth gray bark, and an attractive columnar growth habit. The pale green leaves are a slender elliptical shape, with a paler and hairy underside.

Historical records show that the Donaldson tree was first planted on the farm over 30 years ago. Another tree type named "Hamlin," which has been ravaged by HLB, was also planted around the same time.

The tree responsible for the green brain blobs is the Osage orange tree. It has also been called hedge apple, or bow dark. Each of these names can be understood better once you learn about how the ...

I have a problem with my navel orange tree. It is producing two types of fruit. ... If you just need green onion tops, you can cut the tops back about two-thirds and use those in cooking.

Identify the graft union on the orange tree. The graft union is a diagonal scar approximately 6 to 12 inches above the ground, depending on the age and size of the tree.

It’s a 30-year-old tree called The Donaldson. Scientists say more testing is needed to find out if this can be a viable replacement for traditional orange trees.

Q. About 3 1/2 years ago we planted a Fuyu Persimmon tree from a local nursery near Moreno Valley. It grew rather quickly, and last year, there was a large quantity of beautiful, tasty persimmons.

The Donaldson orange tree. Credit: Giancarlo Buzzi, ARS ARS scientists made a "sweet" discovery that may be important to solving a major problem within the citrus industry.