Hibiscus rosa-sinensis
Light: Morning sun with afternoon shade in Phoenix; protect from intense western exposure and reflected heat.
Water: Moderate to high water needs in Phoenix. Water deeply when the top 1–2 inches of soil begin to dry; containers may need daily watering during extreme heat. Reduce watering in winter without letting the root ball dry completely.
Soil: Fertile, organically enriched, well-drained soil, preferably slightly acidic. Use quality potting mix in containers; avoid waterlogged soil.
Mature size: Typically maintained at 6–10 feet tall and 4–6 feet wide as a tree standard; size varies by cultivar, container size, and pruning.
Bloom: Repeated flowering from spring through fall, potentially longer in frost-free conditions. Extreme heat or cold can interrupt blooming.
Evergreen / deciduous: Evergreen in frost-free conditions; may lose leaves or suffer dieback during Phoenix cold snaps.
Growth rate: Moderate to fast during warm weather with adequate water and nutrition.