Diospyros lotus Seeds | Date Plum Persimmon
LATIN NAME: Diospyros lotus
COMMON NAME: Date Plum, Caucasian Persimmon
Plant Profile
Unlike its shrubby cousin image, date plum grows into a genuinely forest-scale tree — mature specimens reach twenty metres or more, with dark, deeply furrowed bark and a rounded crown of glossy, willow-like leaves that turn butter-yellow in autumn. Linnaeus named it lotus after the mythical “lotus” fruit of the Odyssey’s Lotus-Eaters, though the classical fruit was more likely a jujube; the name stuck and has confused gardeners ever since. The timber, like all ebony-family wood, is dense and dark at the heart, though this species is far too valuable as a fruit and stock tree to be cut for it.
Wild date plum climbs dry mountain slopes from the Balkans and the Caucasus through Iran into Central Asia, and its centre of diversity runs east through the Himalayan foothills. It tolerates summer drought and winter cold well beyond what D. kaki survives, which is the entire point of its career as a rootstock. In Georgia and Azerbaijan it is a recognised woodland tree of the mid-slopes, and in northern Pakistan the dried fruit, amlok, is a standard winter market item.
Fully bletted fruit is eaten raw, dried whole like dates, or pulped into sherbets and country wine across its native range. Dried date plums keep through the winter without refrigeration — the historic reason mountain households still string them up beside the walnut store. In Iran and Central Asia the fruit sometimes enters fruit-leather and syrup, and the seed of related species has been roasted as a coffee substitute in hard years.
As a park tree, D. lotus offers clean foliage, honest autumn colour and a graceful mature crown, coping with urban drought better than most fruit trees. Its tolerance of alkaline and stony soils has earned it a place in Central Asian and southern European avenue planting, and the winter fruit — persistent after leaf-fall — feeds wintering birds and decorates the bare branches.
Science & Biotechnology
The horticultural literature is unambiguous about date plum’s value: it is more drought-tolerant, more cold-hardy and more forgiving of thin soils than kaki seedling rootstock, producing a deep-rooted, long-lived tree. The classic system in Turkey, Georgia and Italy grafts kaki scions onto lotus seedlings raised from seed. Breeders have also used the species in crossing work, chasing its hardiness in new persimmon lines for continental-climate orchards.
The flat, hard seeds carry a firm coat and a chilling requirement, which is why nurseries either sow in autumn frames or stratify cleaned seed in cold, moist storage before spring sowing. Emergence in a nursery bed is steady rather than instant, and seedlings concentrate first growth in the taproot — deep containers or in-situ sowing prevent the root kinks that later make grafting awkward. Seed-raised trees are also the breeders’ lottery: female trees of genuine character do appear among them.
Folk practice across the Caucasus uses the unripe fruit’s astringency externally and the ripe fruit as a gentle restorative, and the bark has entered local dyes and tanning. These are documented regional traditions rather than pharmacopoeial claims, but the underlying astringent chemistry is real and consistent with the family’s tannin profile.
Uses & Benefits
Unripe date plum is dominated by soluble tannins — the same astringent chemistry that governs its big commercial relative — and the traditional cure is identical: patience, or bletting. As the fruit softens, tannins complex with sugars and cell-wall material, astringency falls away, and the flesh becomes date-like in texture. Food scientists studying the genus have documented the shift from astringent to edible as a change in tannin solubility rather than amount, which is why frost, cold storage or gentle drying all do the same job.
Growing from Seed
The species is usually dioecious — male and female flowers on separate trees — so a seedling planting needs both sexes for fruit, and female trees pollinated by a nearby male set heavier crops. Flowers appear with the leaves in early summer: female blooms are solitary, four-lobed and greenish-yellow; male flowers hang in small clusters. The fruits that follow are barely two or three centimetres across, yellow-orange ripening to purple-black, each holding a few flat, pale seeds. A single mature female tree in a good year can bury the ground beneath it.
Sow cleaned seed in autumn a finger-knuckle deep in a loam-and-grit mix, or stratify in cold moist storage for spring sowing into deep tubes. The seedling bed should be free-draining — the one condition seedlings genuinely resent is standing water. Nursery rows in full sun produce the sturdiest stock; light shade is tolerated but slows the wood.
Water young stock through the first summers, mulch the root zone, and expect top growth to lag behind root growth early on. When the stem reaches pencil thickness, trees are ready as rootstock for chip budding or whip grafting in late winter; ungrafted seedlings can simply be planted out at four to six metres spacing for a fruiting avenue of their own. Prune only to shape, since the species carries its fruit on short spurs and needs little cutting.
Established date plum is notably trouble-free: no serious disease follows it in most regions, and the deep root system shrugs off dry summers. The main management question is the male-to-female ratio in seedling plantings — one male per eight to ten females is a common field rule — and keeping grass and root competition clear of the young stem’s first metres.
Our Take
If you garden where kaki sulks, date plum is the persimmon that forgives. Growers wanting the dessert-fruit side of the genus should read our guide to Japanese persimmon, while the velvet-skinned mabolo shows the family’s tropical face.
Related Reading
More species in the same orbit as Date Plum: