Moderate to high water use in Phoenix; water deeply when the top 1–2 inches of soil dry. Check frequently during extreme heat, especially in containers, and reduce watering in winter. Avoid soggy soil.
A yellow-flowering tropical hibiscus (Hibiscus rosa-sinensis) with large, showy flowers and glossy foliage; best in a sheltered Phoenix location with afternoon shade.
Light: Morning sun with afternoon shade; protect from intense western sun and reflected heat.
Water: Moderate to high water use in Phoenix; water deeply when the top 1–2 inches of soil dry. Check frequently during extreme heat, especially in containers, and reduce watering in winter. Avoid soggy soil.
Soil: Well-drained, organically enriched soil, preferably slightly acidic to neutral. Mulch to conserve moisture, keeping mulch away from the trunk.
Mature size: Typically 4–8 feet tall and 3–6 feet wide in protected Phoenix gardens; size varies by cultivar, pruning, and frost exposure.
Bloom: Repeated blooms from spring through fall; flowering may slow during extreme summer heat and cool winter weather.
Evergreen / deciduous: Evergreen in frost-free conditions; may lose leaves or suffer stem dieback during Phoenix cold snaps.
Growth rate: Moderate to fast with adequate warmth, moisture, and nutrition.