Plant care
So Jujube (contorted jujube) care
Ziziphus jujuba 'So'
Also called So jujube, contorted jujube.
Watering rhythm
10-21days
Every 10-21 days in summer once established; very drought-tolerant
Light
Direct sun (at least 4-6 hours)
Soil
Well-drained soil; tolerant of sand, clay, salinity and alkalinity, pH 5.5-8.5
Humidity
20-60%
Temp
-20 to 40C (growing optimum 25-38C)
Pet safety
Mildly toxic to pets
Mature size
2.5-4.5 m tall (8-15 ft)
Care at a glance
Light
Most houseplants will scorch where so jujube thrives. Give it the windowsill you'd otherwise leave empty because everything else burned there. Full sun is essential for fruiting and to show off the contorted branch structure. Provide at least 6-8 hours of direct sun; long, hot summers ripen the fruit. A plant moved abruptly from low light to direct sun bleaches in 48 hours — always acclimatise over a week.
Watering
For so jujube in the ground or in a bed, aim for every 10-21 days in summer once established; very drought-tolerant. Soak the root zone rather than misting the foliage; deep, less-frequent watering trains roots downward and produces a more drought-resilient plant by mid-season. Water young trees to establish, then only in extended drought or during fruit swell. It prefers to dry out between waterings and dislikes constantly wet soil.
Soil and pot
So Jujube grows best in well-drained soil; tolerant of sand, clay, salinity and alkalinity, ph 5.5-8.5. Adaptable to poor and alkaline ground unsuitable for most fruit. Sharp drainage is essential; avoid heavy, waterlogged soils that cause root problems. A pot with a working drainage hole is non-negotiable for this species — even free-draining mix will turn soggy in a closed planter. If you love the look of a decorative pot without a hole, use it as a cachepot around an inner nursery pot you can lift out to water.
Humidity and temperature
So Jujube sits happiest at around 20-60% humidity and -20 to 40C (growing optimum 25-38C) (-4 to 104F (growing optimum 77-100F)). Adapted to hot, dry climates and indifferent to low humidity. No humidity management is required. If you keep the room above year-round and avoid placing the plant near a cold draught, a hot radiator, or an air-conditioning vent, you have already handled the two biggest indoor stressors.
Fertilising
Feed so jujube sparingly. Undemanding. A spring application of balanced fertiliser or compost is enough; it fruits well in lean soil. Avoid heavy nitrogen, which favours suckering and leafy growth over the ornamental form and fruit. Skip fertiliser entirely on a stressed, recently-repotted, or actively wilting plant — fertiliser salts make damage worse, not better. Wait for a round of healthy new growth before resuming a feeding rhythm.
Common problems
Below are the issues we see most often on so jujube in the Growli community. Each is annotated with the most common cause so you know where to start.
- Root suckering — Suckers appear around the base and along roots. Remove them to prevent a thicket and keep the ornamental contorted form clean and dominant.
- Poor ripening in cool summers — Needs sustained heat to ripen and sweeten the small fruit; in cooler climates it stays bland. Plant in the hottest, sunniest, most sheltered spot.
- Lighter crops grown alone — Partially self-fertile but more productive with a second cultivar such as 'Li' or 'Lang' for cross-pollination.
- Spines on young wood — New shoots carry sharp thorns among the contorted branches. Wear gloves when handling and pruning.
Propagation
Propagated by grafting onto jujube rootstock, or from root suckers and root cuttings that retain the contorted cultivar. Seed does not come true to 'So'. Propagation is the cheapest, most satisfying way to expand a collection — and it doubles as insurance against losing a mature plant to an accident. Take a backup cutting once the parent is established and healthy.
Toxicity to pets
So Jujube is mildly toxic to pets. Ziziphus jujuba is not individually listed by the ASPCA. The ripe flesh is edible, but the seeds/pits contain cyanogenic compounds and the wood bears spines; treat with caution, keep pets from chewing fallen pits or foliage, and verify with a vet if seeds are ingested. If you keep cats, dogs, or curious children in the house, weigh placement carefully — a high shelf or a hanging planter is enough for casual safety. For severe ingestion incidents, call your local vet and the ASPCA Animal Poison Control Center (in the US, 888-426-4435).
Pet-safety status is sourced from the ASPCA Toxic and Non-Toxic Plant List, which catalogues the most-asked-about plants for cats, dogs, and horses.
So Jujube care — frequently asked questions
What is the common name for Ziziphus jujuba 'So'?
Ziziphus jujuba 'So' is most commonly called So Jujube, but it is also known as So jujube, contorted jujube. The names refer to the same species, so care instructions for So Jujube apply identically to anything sold as contorted jujube.
How much light does so jujube need?
So Jujube grows best in direct sun (at least 4-6 hours). Full sun is essential for fruiting and to show off the contorted branch structure. Provide at least 6-8 hours of direct sun; long, hot summers ripen the fruit.
How often should I water so jujube?
Water so jujube every 10-21 days in summer once established; very drought-tolerant. Water young trees to establish, then only in extended drought or during fruit swell. It prefers to dry out between waterings and dislikes constantly wet soil. The finger-test (or lifting the pot to feel its weight) beats a fixed weekly calendar because pot size, light, and season all change how fast the soil dries.
Is so jujube toxic to cats and dogs?
So Jujube is mildly toxic to pets. Ziziphus jujuba is not individually listed by the ASPCA. The ripe flesh is edible, but the seeds/pits contain cyanogenic compounds and the wood bears spines; treat with caution, keep pets from chewing fallen pits or foliage, and verify with a vet if seeds are ingested.
What USDA hardiness zone does so jujube grow in?
So Jujube is rated for USDA zone 6-9 and RHS hardiness H4. Outside that range, grow it as a container plant that overwinters indoors before the first hard frost.
So Jujube deep-dive guides
Every aspect of so jujube care, each with its own calibrated guide:
- So Jujube watering schedule
- So Jujube light requirements
- Best soil mix for so jujube
- So Jujube fertilizing guide
- When to repot so jujube
- How to propagate so jujube
- So Jujube growth rate & size
- So Jujube cold hardiness
- So Jujube temperature & humidity
- Is so jujube toxic to cats & dogs?
- Is so jujube toxic to cats?
- Is so jujube toxic to dogs?
Related guides
So Jujube is also commonly called So jujube or contorted jujube.