Hi, I found this interesting post:
http://davesgarden.com/guides/pf/go/193372/#bthey call it eugenia pyriformis var argentea... so I should have that, I believe... also, when they talk about frost hardiness, it is what I believe this species should resist:
Hardiness:
USDA Zone 9a: to -6.6 °C (20 °F)
USDA Zone 9b: to -3.8 °C (25 °F)
USDA Zone 10a: to -1.1 °C (30 °F)
USDA Zone 10b: to 1.7 °C (35 °F)
USDA Zone 11: above 4.5 °C (40 °F)
a person wrote:
"On Aug 18, 2010, Kalpavriksha from Sarasota, FL wrote:
I was given a seedling of this plant to plant at my mom's in central Florida. 10 yrs later I was being asked what this fruit tree was?. It was a cold hardy, winter-deciduous, crepe myrtle sized tree that dropped its golden fruit all at once. The fruit taste resembled apricot.
If the fruits were not gathered, a single large stone remained."