Diospyros lotus
| Date plum (Diospyros lotus) | |
|---|---|
| |
| Scientific name | Diospyros lotus |
| Common names | Date plum; lotus persimmon |
| Genus | Diospyros |
| Family | Ebenaceae |
| Order | Ericales |
| Habit | Deciduous tree; separate male and female flowers |
Diospyros lotus, commonly called date plum or lotus persimmon, is a deciduous persimmon species native across temperate parts of Asia and the Caucasus and introduced in parts of Europe and Japan.[1] It is grown both as a fruiting species and as a source of persimmon rootstock.
Description[edit | edit source]
The tree is deciduous and has separate male and female flowers. A long taproot is reported for the species, so moving established plants can be difficult; choose the final planting position with root disturbance in mind.[2] The species is suited to a temperate seasonal cycle rather than a frost-free evergreen one.
Cultivation[edit | edit source]
Soil and water[edit | edit source]
Use a well-drained loam and avoid a site that remains waterlogged. The reported long taproot makes deep, uninterrupted soil preferable to a shallow planting pocket, and transplanting should be done while the root system is as intact as possible.[2] Use this drainage guidance as a starting point, not as a fixed tolerance limit for every site.
A 2024 study of D. lotus under drought and recovery found that melatonin treatment reduced oxidative-stress responses and improved several recovery-associated physiological responses. That result does not establish a garden irrigation threshold or a melatonin treatment for routine cultivation.[5]
Sun and humidity[edit | edit source]
Begin with a warm, sheltered position in full sun or light shade. Good airflow is useful where humidity is high, while shelter from drying wind helps a newly transplanted tree retain moisture; the species-specific exposure guidance is secondary and should be adjusted for local heat and wind.[2]
Seasonal changes[edit | edit source]
The tree drops its leaves as part of its seasonal cycle. Autumn seed maturity is reported, but the calendar for leaf fall, flowering, and fruit ripening varies with climate and plant age.[2] In a warm growing region, keep the root zone evenly established during active growth and avoid interpreting a cool-season slowdown as evergreen water demand.
Propagation[edit | edit source]
Ripe seed is best sown promptly. Stored seed benefits from cold stratification; germination may take one to six months at about 15 °C, and half-ripe cuttings or spring layering are alternative methods.[2] Treat those figures as a starting point rather than a guaranteed schedule for every seed lot.
Diospyros lotus is used as a persimmon rootstock in California. Texas A&M notes that trees on Lotus rootstock have been planted in Texas, but that their long-term performance there is unknown.[3]
A controlled 2024 experiment used the L938 D. lotus rootstock clone in coarse vermiculite under intermittent mist. Treatments consisted of a two-hour soak in 4000 mg/L malic acid or tartaric acid, with water as the control; the treated cuttings had higher rooting and survival and more lateral roots under those experimental conditions.[4] The work concerns a named clone and controlled propagation system, not a universal home-garden recipe.
Flowering, fruiting, and harvest[edit | edit source]
Male and female flowers occur on separate trees, so the sex of a seedling cannot be assumed from its vegetative growth. Fruit becomes richer-flavored and less astringent when fully ripe or dried.[2] Harvest timing should follow the fruit's ripeness rather than a single calendar date, because seasonal conditions alter development.
Fruit and uses[edit | edit source]
Date plum fruit is described as small and suitable for use when fully ripe or dried. Ripe or dried fruit is the described food use; fruit quality and astringency should be judged on the individual tree and harvest stage.[2]
Growing record[edit | edit source]
In a 22 May 2021 Reddit discussion, u/kalekaiser described burned leaf tips on a newly planted D. lotus in sandy soil amended with purchased cow-manure compost and sand and watered with rainwater. The thread included competing suggestions involving fertilizer, salts, psyllids, and heavy clay, but did not establish a diagnosis; it is a single, incompletely documented observation rather than a general care rule.[6]
References[edit | edit source]
- ↑ [4] Low-Molecular-Weight Organic Acid as an Alternative to Promote the Rooting of Persimmon Rootstock Shoot Cuttings.
- ↑ [5] Melatonin-mediated alleviation of drought stress via modulation of physio-biochemical and soil bacterial community structure in Diospyros lotus L..
Image credits[edit | edit source]
- Caucasian persimmon - Diospyros lotus 07.jpg: Diospyros lotus fruits in Espiye, Giresun, Turkey. Creator: Zeynel Cebeci. License: CC BY-SA 4.0. Individual file page
