Oro Blanco

Semi-dwarf tree, grafted, bears Dec. to May & is seedless. Grows to 12 feet. Sweeter than Marsh. Peels moderately well. Vigorous spreading canopy. Large sized fruit, yellow rind, juicy white flesh that is sweet! Best for in the ground planting. Wonderful accent in the landscape.

Rio Red

Semi-dwarf tree, grafted, bears June to Sept. Seedless.Grows to 12 feet. Juicy, sweet large fruits. Needs heat for the fruit to color well. Vigorous growth, large tree, give ample room. Bears well. Developed in Texas.

Ruby Red

Semi-dwarf tree, grafted, bears June to Sept. Seedless. Trees grow to 12 feet. Same as Rio Red except developed in Florida. Another variety that lends itself well to the landscape, both in-ground and large containers.





Round fruit is sweeter, juicier, & less seedy than other Kumquats. Forms well & likes cool summers. Considered the best eating of all varieties. Best fresh. Nearly thornless.


Semi-dwarf tree, grafted, bears June to Sept. Few seeds. 8 feet in height. Heavy yield of small-oval bright orange fruit. The rind is tender & sweet, making the whole fruit edible. The flesh is tart and is excellent for candying & for marmalade.





























Deciduous fruit






Specialty Fruit

Chill Hours

Cold chill hours can be a little confusing. Basically they are the number of hours below 45°F subtracting the number of hours above 60°F between the months of November and February.

If you live in or around any of these areas, your average chill hours are:

  • Malibu, Ventura, Santa Barbara: ± 300 Hours
  • San Fernando Valley, Fillmore, Simi Valley: ± 800 Hours or less
  • Santa Clarita, Lancaster: 800 Hours or more

There is no simple test for "Chill Hours" and they are calculated as an average. Each winter season differs in total chill hours accumulated, which can affect fruit production. Most of the fruit trees we carry at Otto & Sons are classified as low chill requirement and are better matched for our Southern California chill hours.