chong

Benny, here is a quote from the Purdue University Agri. website:
"It is not strictly tropical, for mature trees can withstand temperatures of 26º to 28º F (-3.33º to -2.2º C) for several hours. Young trees are tenderer and apt to be killed by 30º F (-1.11º C) unless the stem is banked with sand or wrapped with straw and burlap during the cold spell. A number of sapodilia trees have lived for a few years in California without fruiting and then have succumbed to cold. Cool nights are considered a constant limiting factor. However, I have learned of one tree in a protected location in the Sacramento Valley that has survived for many years, reaching a large size and fruiting regularly. The sapodilla seems equally at home in humid and relatively dry atmospheres."

My four plants survived temperatures in the low 20's outside, but they had clear plastic over them, next to the house, and two 100-watt incandescent lights inside the enclosure. Apparently, that wasn't enough for last year's cold weather here, though. At one point our temperature dropped close to zero, and that probably did it. That's about the same as guavas, I think.