Carica papaya
Light: Full sun with afternoon shade in Phoenix, especially for young plants; protect from reflected heat and strong winds.
Water: Keep the root zone evenly moist during warm weather, allowing the surface to dry slightly between thorough waterings. Check frequently during extreme heat; reduce watering substantially in cool weather and never leave soil waterlogged.
Soil: Fertile, organically enriched, exceptionally well-drained soil; slightly acidic to neutral preferred. Use a raised mound where drainage is poor and monitor for nutrient deficiencies in Phoenix’s alkaline soils.
Mature size: Typically 10–20 feet tall and 6–10 feet wide; some cultivars reach 30 feet, while dwarf selections remain shorter.
Bloom: May begin flowering within 4–8 months under consistently warm conditions. Flowering and fruit set slow or stop during winter and extreme summer heat; fruit often requires 9–14 months from planting to harvest under favorable conditions.
Evergreen / deciduous: Evergreen in frost-free conditions; cold, drought, or other stress can cause leaf loss.
Growth rate: Very fast in warm weather with adequate moisture and nutrition; slow or nearly dormant in cold weather.