Ribes josta JOSTABERRY (plant)

Jostaberry, also known as Ribes josta in Latin, is a hardy perennial fruit shrub belonging to the Grossulariaceae family. It is a thornless, fast-growing bush that reaches an average size of 2 meters in height and width at maturity.

Its trilobed foliage is deciduous, dense, and dark green.

Jostaberry seeds are black, smooth, elongated, and about 3 mm long.

The fruits, called jostaberries, are black berries measuring 1 to 1.5 cm in diameter. Their flavor and appearance perfectly combine the deep color of the blackcurrant with the tangy zest of the gooseberry.

Flowering begins in April, featuring small white flowers with red bracts that add a lovely ornamental touch to the garden.

- Uses:

A Champion of Garden Productivity

The Jostaberry is a vigorous hybrid resulting from a cross between the blackcurrant and the gooseberry.
Its compact habit makes it the ideal fruit shrub, even for small spaces.
Highly resistant to common diseases, it offers exceptional yields that far surpass its botanical parents. It is a reliable choice for structuring your fruit hedges or edible borders.

A Cocktail of Flavours for Your Desserts

Its dark, fleshy, and generous berries are a delight for food lovers.
They offer a perfect balance between sweetness and acidity, making them extremely versatile.
In the kitchen, they enhance fresh fruit salads, add depth to artisanal sorbets, and are perfect for making creamy jams or flavour-rich jellies, providing an incomparable texture.

The Gardener's Asset: Ease of Cultivation

Beyond its taste qualities, the Jostaberry is praised for its ease of cultivation.
Unlike the gooseberry, it has the major advantage of being almost thornless, which greatly facilitates harvesting.
Robust and undemanding, it adapts to many soil types and requires minimal maintenance, making it the ideal ally for both beginner and experienced gardeners.

- Culture and Planting:

• Plant the shrub in a 3-liter pot using high-quality horticultural potting soil. Add clay pebbles at the bottom for drainage.
• You can also transplant it directly into the ground in autumn or early spring in a sunny spot.
• Water gently immediately after planting.

- Substrate / Soil Type:

Jostaberry grows in almost any type of soil. However, for the best fruit production, it requires an airy, well-drained substrate rich in organic matter.

- Exposure / Light:

This shrub requires a full sun exposure to thrive and sweeten its berries.

- Temperature / Hardiness:

It is very hardy, easily resisting temperatures as low as -15°C (USDA Hardiness Zone 7b). It grows optimally in temperatures between 15°C and 25°C.

- Watering / Irrigation:

Ribes josta needs frequent watering during the first 3 weeks after planting to help the root system establish. Afterward, it generally doesn't require watering unless grown in a pot. Applying mulch at the base helps retain moisture and reduces the need for irrigation.

- Pests / Diseases:

This species is quite resistant to pests, though the leaves can occasionally be affected by rust (a fungal infection).

- Maintenance:

Every 2 years (starting after 8 to 10 years of growth), remove dead wood from the center of the bush to improve airflow. In winter, collect the fallen leaves or use them as natural mulch.

This article was written by Julien on 07/16/2026.