Jujube tree: the Asian fruit tree that can withstand -15 °C

One September morning, in a small garden still damp with dew, a neighbour proudly showed off a tree laden with mahogany-brown fruit, almost concealed by its leaves. Nobody could quite identify this fruit tree, yet it had come through several winters at -12 °C without any special protection. It was a jujube tree, an Asian species that is gradually winning over gardeners weary of temperamental fruit trees. Its fruit, jujubes, are like small crisp dates when fresh, becoming soft and melting when dried. Put in the ground at the right time, an established specimen may even bear a few fruits by the following autumn. It is an unexpected prospect worth exploring.

The jujube tree, an Asian fruit tree that withstands almost anything

The common jujube, or Ziziphus jujuba, has the understated appeal of trees that tend to be discovered late. It often comes into leaf more slowly in spring than a cherry or apple tree, which can concern impatient gardeners, before producing small glossy leaves and modest flowers that insects value greatly. As the first cool nights arrive, its fruit changes from green to reddish brown. In a family garden, its supple, sometimes slightly thorny branches create a light, almost graphic outline. It is not showy for most of the year, but it knows when to draw attention.

Its tolerance of cold accounts for much of its appeal. Depending on the variety and position, a mature jujube tree will commonly withstand temperatures close to -15 °C, and occasionally a little lower for a short period where the soil remains well drained. This makes it a possibility in many parts of France, including well beyond Mediterranean gardens. In eastern, central and certain western areas, it can thrive against a sunny wall. Young trees remain more vulnerable over their first two winters, but become hardier each year once their roots are established.

The jujube tree’s origins are another part of the answer: it comes from Asian regions with hot summers, sometimes poor soils and marked temperature swings. It dislikes waterlogged roots, but copes very well with heat and dry spells once established. That toughness does not mean it should be neglected in a forgotten corner of the plot. Even with the best intentions, a tree planted in heavy, permanently wet ground will struggle. The jujube tree is undemanding, certainly, but it prefers clear conditions: sunshine, room to grow and soil that can breathe.

Plant it now and it could surprise you by next autumn

Autumn planting suits it especially well, provided the ground is neither frozen nor saturated. Dig a hole twice the width of the root ball, loosen the base without reducing the soil to dust, and position the tree at the same depth as it was in its pot. In most cases, a mix of garden soil and mature compost is entirely sufficient. Water thoroughly after planting, even if rain is forecast, as this removes air pockets around the roots. A light mulch will retain moisture without smothering the root collar.

To have a chance of seeing fruit by the following autumn, choose a grafted, well-developed jujube tree rather than a young seed-grown plant. Varieties such as ‘Li’, ‘Lang’, ‘Chico’ and ‘Honey Jar’ are commonly available from nurseries, each offering a different fruit profile: larger, sweeter or crisper. Honestly, few people compare varieties every time they buy a tree. Yet this small habit can prevent plenty of disappointment. A two- or three-year-old specimen, planted in sunshine and watered properly through its first summer, can produce a few jujubes quite quickly.

The most common mistake is trying too hard. Fertiliser is added, watering becomes constant, branches are pruned at random, and then the tree appears to sulk. A jujube tree responds better to a light touch and some patience.

“With the jujube tree, gardeners often achieve better results by observing the tree than by trying to intervene every weekend.”

• Select a south- or south-west-facing position.
• Avoid hollows where water remains after rain.
• Protect the young trunk with mulch, but do not place it directly against the bark.
• Prune mainly dead wood and crossing branches in late winter.

Remarkable jujubes, somewhere between a crisp apple and a sweet date

Jujubes are unlike the fruits usually picked in France. While still firm and reddish, they have crisp, slightly floury flesh with a flavour reminiscent of a mild apple. As they ripen further, the skin wrinkles and the flesh becomes denser, almost candied. At this point, they bring dates to mind, although their taste is not exactly the same. Some people eat them straight from the garden, while others dry them on a tray beside a window. Either way, the fruit retains an unusual quality that makes you want another.

Harvesting generally takes place from September to November, according to the variety, climate and summer sunshine. A young tree will not produce kilograms of fruit in its first growing year, and that is perfectly normal. Even a handful of jujubes is enough to assess the chosen variety and watch how it performs. Over time, a mature jujube tree can become genuinely productive without requiring the frequent treatments needed by certain apple or peach trees. A fruit tree with few diseases is a promise that appeals to many gardeners.

The jujube tree also encourages us to reconsider what we expect from a fruit tree. It does not offer a spectacular crop in its first spring, produce huge flowers or look like the star of the garden centre. It settles in quietly, finds its feet, and often becomes the tree visitors ask about by name. We all know that moment when a fruit picked in somebody else’s garden seems better simply because it comes with a story. With its unusual, delicious jujubes, this tree creates exactly that sort of memory.

Key point	Detail	Benefit for the reader
Hardiness	A mature jujube tree can withstand around -15 °C, particularly in free-draining soil and sheltered from icy winds.	It is a realistic option for many French gardens, including places where citrus trees would not survive.
Planting	Autumn encourages root establishment before summer heat, provided waterlogged ground is avoided.	A better-established tree will suffer less in dry weather and can make a more vigorous start in spring.
Harvest	A grafted, established plant in a sunny position can produce a few fruits by the following autumn.	The gardener can discover jujubes quickly and decide whether this variety deserves a permanent place in the garden.