The most popular of citrus include sweet orange, lemon, lime, grapefruit and mandarin orange. Less common citrus include variations of these as well as blood orange and kumquat. The variations of the more common citrus are distinguished by their acid content or flavor.

Eureka’ and ‘Meyer’ lemons actually continue producing minor quantities of fruit throughout the year so that a fresh lemon can be found even when lemons are not in season. However, limes that will be seasonable later may not be left on the trees as long because they are used prior to ripening.

A ‘sucker’ is a stem that originates below the graft of a viable tree. Because many grafted cultivars are less vigorous than their own understock, they may easily be overwhelmed by suckers.