Plant Name: Shiro Plum
Scientific Name: Prunus salicina ‘Shiro’ — Shiro Japanese Plum, Yellow Shiro Plum
Mature Height: 15–20 ft
Mature Spread: 12–18 ft
Growth Rate: Fast (2–3 ft/year)
Sun: Full sun
Water: Moderate; ~10–15 gal/week while establishing, then ~15–20 gal every 7–10 days once established; increase during fruit development and extreme heat
Foliage: Medium green, deciduous
Fall Color: Yellow to orange
Flower Color: White
Bloom Time: Early spring
Fruit: Medium-sized, round, golden-yellow to amber skin and yellow flesh; juicy, sweet, and mildly tart
Harvest Time: July–August
Hardiness Zones: 5–9 (−20°F to 20°F)
Features: Attractive golden-yellow fruit; sweet and juicy; excellent fresh eating; productive; distinctive alternative to red and purple plums
Additional Facts: Requires a compatible pollinator for reliable fruit production. Santa Rosa is commonly used as a pollinator. Shiro is notable for its bright yellow fruit and mild, sweet flavor.