Plums with low chill requirement do grow and fruit in phoenix with proper care
Fruits have deep red-purplish skin and amber with red streake flesh. Methley is a medium to large high quality fruit. The tree is a self-fertile . It is aJapanese variety. (250 Chill Hours)

Santa Rosa
Its large oval purplish-red fruit and  has firm, rich, sweet-tart flavor. Santa Rosa is self-fertile and ripens in mid-June. (400 Chill Hours)
Trees in photo are Methley and Santa Rosa Plum planted two years ago . They have hundred of fruits this year

Plant care

. . As with all the fruits trees, I irrigate them 7-14 days during growing season and every 4 to 6 weeks during the winter.

We have 3 to 5 inch thick layer of partially compost mulch around the tree drip line,which provide all nutrient to the plant for healthy growth.
Paint the trunk of young tree with water soluble white paint mixed with 50/50 water to prevent sun burn