The Content Of The Article:
- Location and ground
- Planting and care
- Harvest and recovery
- Diseases and pests
The Jostabeere (Ribes x nidigrolaria), Josta for short, is a cross between blackcurrant and gooseberry - that is why the German name is also composed of the word parts "Jo" and "sta". Already in the 19th century, the first crossing attempts took place, in which a thornless gooseberry should come out. Only in 1922 these attempts were finally crowned with success and the Jostabeere was born.
The Jostabeere, also called Jochelbeere belongs, from a botanical point of view to the gooseberry plants (Grossulariaceae). It grows thornless, fast and expansive. Her dreilappigen, notched leaves are ovate to roundish. The self-fertilizing small shrub reaches a height and width of about two meters. In contrast to the currant, in which the flowers are arranged in long, drooping grapes, the flowers of the Jostabeeren stand alone or in pairs on the shoots. From the outside, the ripe black-purple fruits in July are more like those of the currant - only that they are much larger and taste sweeter. The typical smell of black currant is absent, as the oil glands are missing. The fruits of the relatively uncomplicated growing berry shrub can be consumed raw, but also taste to jams and jellies.
The fruits of the Jostabeere look like the blackcurrant, but are much larger
Location and ground
When planting Jostabeeren you should make sure that the location is somewhat protected, as, for example, late frost can cause the fruit set to be sparse. In addition, Jostabeeren prefer a deep and humus soil and a sunny to partially shaded location.
Planting and care
In order to drive them out in the spring, you should plant the Jostabeere already in late autumn, after their leaves have fallen off. The ideal planting distance is two and a half to three meters in the row. The fruit is available as a pot. Pick up a pit twice the size of the root ball, set the shrub just as deep as it used to be in the pot, and cover the bottom branches with soil. To prevent wind breakage, tie the plants to a pole or attach to a wire mesh.
A year round mulch layer of grass clippings or compost protects the shallow roots from dryness. In addition, strong mulching keeps the moisture in the soil and suppresses the growth of the grass. A manure with horn shavings in March / April has also proven itself. Especially in case of prolonged drought and in the summer months you should also water the Jostabeere well. If your Jostabeere has grown too big, you can easily transplant it in winter. Then you should cover the planting place with compost or foliage.
As the fruit grove produces short shoots that form on the perennial wood, the shrubs are not cut annually, but only occasionally lightened. So she trains more flower buds and better fruits. From the age of four, you can remove old leading gears on the ground, leaving six to eight strong shoots. The cutting is best done after the harvest.
Jostabeeren bloom and fruit on short shoots, which form on the perennial wood
Harvest and recovery
The fruits ripen in June / July. Since they are unevenly ripe, they must be harvested several times. The vitamin C-rich berries grow close together and are easy to pick. They can be consumed raw, but are also ideal as an addition to ice cream, yogurt and can be boiled to jams and jellies. For jelly, the berries should be harvested early, since then the pectin content is higher.
'Jostine' is a mid-early, medium-sized and highly aromatic variety that grows medium to very high upright. 'Jogrande' is also early in the morning, but produces larger fruits. It is very robust, but grows a bit weaker and shallower than 'Jostine'. 'Jonova' bears big reddish fruits. It is also very robust, grows fast and is characterized by an upright growth habit.
Most Jostabeeren are propagated via Steckhölzer. Between September and April, cut about 15 cm long shoots from the one-year-old wood, which are then put into a container with soil. Pour the cuttings well and place them relatively warm until they rooted. An increase over Absenker is also possible.
Diseases and pests
Since Jostabeeren combines the resistance of currants and gooseberries, the hybrid is very robust. Mildew, rust, leaf fall sickness and blackcurrant gall mite are rare occurrences.