Wax myrtle (Morella cerifera) is a native tree/small shrub that produces berries eaten by more than 40 species of birds as well as a number of mammals. Wax myrtle is also a host plant for the jewel-like red-banded hairstreak. The plant also provides birds with nesting sites and escape cover. Unfortunately, many people that plant wax myrtles in hopes the plants will annually bear a bounty of berries are left scratching their heads trying to figure out why their shrubs never produce any berries.
The reason why they end up with barren wax myrtles is due to the fact that wax myrtles are either male or females. According to the Lady Bird Johnson Native Plant Center, often the wax myrtles grown by wholesale nurseries are cloned. If you buy a small wax myrtle full of berries, there is a good chance it was cloned from female plants that were pollinated by male plants growing nearby. Consequently, in future years, unless a male plant is growing in or near your yard, your shrubs will not produce any berries.
With that in mind, if you want to ensure that wax myrtles planted in your yard will produce berries; explain to the folks where you buy your nursery plants that you want to purchase both female and male plants. If they cannot guarantee that you are purchasing both male female plants, shop elsewhere.
You can begin your search for male and female wax myrtles by checking with nurseries that specialize in native plants. If they stock wax myrtles, they are undoubtedly aware of this situation and probably offer both male and female plants. A good place to begin this search for a native plant nursery is to check the list of native plant nurseries listed in the Archive section of this blog.
If you cannot find a source of male wax myrtles there, see if any of your friends and neighbors grow wax myrtles. If they do, most likely they know the sexes of their wax myrtles. Since these shrubs send out lots of suckers, I am sure they will let you dig a few of the suckers sprouting beneath a male plant.