Philadelphus pubescens
Light: In Phoenix, provide gentle morning sun and afternoon shade; avoid reflected heat and exposed west-facing locations.
Water: Moderate to high water needs in Phoenix. Water deeply to keep the root zone evenly moist but not saturated; check moisture frequently during summer.
Soil: Well-drained, organically enriched soil. Mulch the root zone, keeping mulch away from the trunk; highly alkaline soil may cause nutrient deficiencies.
Mature size: Typically 10–20 feet tall and 8–15 feet wide as a shrub; tree-trained standards vary with training and pruning.
Bloom: Late spring to early summer on previous-year growth; flowering may be unreliable in Phoenix.
Evergreen / deciduous: Deciduous.
Growth rate: Moderate under suitable conditions; slower or stressed in Phoenix.