Date Plum

Diospyros lotus is native to a broad region spanning from East Asia through Central Asia to parts of southeastern Europe.

• Native range extends from China and the Caucasus region through Iran, Afghanistan, and into parts of the Mediterranean
• Grows wild in temperate and subtropical montane forests at elevations of approximately 600–2,000 meters
• Considered one of the most cold-hardy species in the genus Diospyros, tolerating winter temperatures as low as −20 °C (−4 °F)
• Has been naturalized in parts of southern Europe and is occasionally cultivated as an ornamental in temperate gardens worldwide
• Fossil and historical evidence suggests it has been present in the Caucasus and Central Asia since at least the Tertiary period

The Date Plum is a medium-sized deciduous tree with distinctive bark, foliage, and fruit.

Tree & Bark:
• Typically grows 10–15 meters tall, occasionally reaching up to 20 meters
• Trunk diameter up to 50 cm
• Bark is smooth and grey when young, becoming scaly and flaky with age, eventually developing a distinctive checkered or plated pattern similar to other Diospyros species

Leaves:
• Alternate, simple, elliptic to oblong-ovate
• 8–15 cm long and 4–7 cm wide
• Dark green and glossy on the upper surface, paler beneath
• Margins are entire (smooth-edged)
• Petioles (leaf stalks) are short, approximately 1–2 cm
• Autumn coloration turns yellow before leaf fall

Flowers:
• Dioecious — male and female flowers are borne on separate trees
• Flowers are small, yellowish-green, and bell-shaped (~5–8 mm long)
• Male flowers appear in clusters of 2–3; female flowers are usually solitary
• Blooming period is typically May to June
• Pollinated primarily by insects

Fruit:
• A berry, spherical to slightly flattened, approximately 1.5–3 cm in diameter
• Immature fruit is green and astringent
• Ripe fruit turns yellow to orange-yellow, sometimes with a bluish bloom
• Contains 4–8 flat, brown seeds
• Flesh is soft, sweet, and date-like in flavor when fully ripe (hence the common name "Date Plum")
• Fruit matures in October to November

Diospyros lotus thrives in temperate montane forests and is adapted to a range of soil and climatic conditions.

Habitat:
• Found in mixed deciduous forests, forest margins, and rocky slopes
• Prefers well-drained, loamy to sandy soils
• Tolerates calcareous (limestone) soils
• Grows at elevations of approximately 600–2,000 meters in its native range

Climate:
• Cold-hardy to USDA hardiness zones approximately 5–8
• Requires a period of winter chilling for proper dormancy and fruiting
• Prefers warm summers for fruit ripening
• Moderately drought-tolerant once established

Ecological Role:
• Fruit is consumed by various bird and mammal species, which aid in seed dispersal
• Flowers provide nectar and pollen for pollinating insects
• Serves as a rootstock for cultivated persimmon (Diospyros kaki) due to its cold hardiness and disease resistance

The Date Plum is occasionally cultivated as an ornamental and fruit tree in temperate regions, valued for its cold hardiness, attractive bark, and edible fruit.

Light:
• Prefers full sun to partial shade
• Fruit production is best in full sun

Soil:
• Adaptable to a range of soil types but performs best in well-drained, loamy soils
• Tolerates slightly alkaline (calcareous) soils
• Avoid heavy, waterlogged clay soils

Watering:
• Moderate water requirements
• Water regularly during the first few years after planting
• Once established, the tree is moderately drought-tolerant

Temperature:
• Cold-hardy to approximately −20 °C (−4 °F)
• Requires winter chilling (temperatures below 7 °C) for proper dormancy

Propagation:
• Primarily by seed — seeds require cold stratification (2–3 months at 1–5 °C) to break dormancy
• Germination rate improves after stratification
• Can also be propagated by grafting onto seedling rootstock
• Since the species is dioecious, both male and female trees are needed for fruit production

Common Problems:
• Generally resistant to most pests and diseases
• Fruit may be susceptible to bird damage when ripe
• Young trees may need protection from harsh winter winds in colder zones