Moderate water in Phoenix. Water deeply and regularly during establishment; afterward, let the upper soil dry between deep irrigations. Increase watering during extreme summer heat.
Assuming the commonly planted shiny xylosma (Xylosma congestum): a heat-tolerant shrub or small tree with glossy green leaves, bronze new growth, and gracefully arching branches.
Light: Full sun to partial shade; afternoon shade is beneficial near heat-reflecting walls in Phoenix.
Water: Moderate water in Phoenix. Water deeply and regularly during establishment; afterward, let the upper soil dry between deep irrigations. Increase watering during extreme summer heat.
Soil: Well-drained soil; tolerates sandy, loamy, and clay soils, including moderately alkaline conditions. Avoid persistently saturated soil.
Mature size: Typically 10–15 feet tall and wide; may reach 20 feet or more when unpruned under favorable conditions.
Bloom: Small, inconspicuous flowers appear seasonally, often in late summer or fall in warm climates.
Evergreen / deciduous: Evergreen in mild winters; may lose leaves or suffer tip damage during unusually cold freezes.
Growth rate: Moderate to fast with adequate irrigation.