General description: Bianca is an interspecific hybrid from Hungary. It is one of the tastiest cultivars for Polish temperate climate. It grows from 5 to 8 m high. Due to its high resistance to diseases it’s an attractive variety to gardeners.
Fruit: This grapevine produces medium to large grape bunches. Its fruit are medium-sized, round, sweet, with a firm flesh and yellowish skin.
Ripening: Bianca grapes ripen near the end of September.
Leaves: Bianca has decorative green leaves that turn yellow in autumn.
Cultivation requirements: This grapevine requires a sunny and warm location, although it tolerates partial shade. It prefers average humus garden soil. It can be cultivated throughout temperate climes. Seedlings should be planted every 1-1.5 meters, 10-15 cm deeper than in the pot they came in. Very small seedlings should be planted in a shallow hole and only covered wholly with soil in autumn. This significantly increases the frost resistance of grapevines and increases the efficiency of watering freshly planted vines.
Care: To build a powerful root system, grapevines need a lot of water. Caring for a newly planted seedling is basically limited to systematic watering. It is especially important to pay attention to watering in early summer and as the grapes ripen. Each young vine requires up to three buckets of water per watering.
Pruning: In the first year after planting, it’s recommended to keep only one to three stems. In the following years, trimming depends on how the vine is to be shaped. Thinning out in order to obtain high quality fruit is advised. Generally, stems should be pruned to a moderate length and care should be taken whilst selecting which stems and shoots are to be cut, to leave well-fruiting ones on the plant. It is best to leave pruning until late autumn and winter or in summer after new shoots are partially lignified. To ensure goodquality fruit, heavy pruning is recommended.
Props: This grapevine is perfect for growing on all kinds of fences, pergolas and arbours, trellises and other garden support structures.
Overwintering: The Bianca grapevine withstands temperature drops of down to -24°C, however it is recommended to protect the plant for the winter (for e.g., by using agrotextiles). At the beginning of November, cover young seedlings by piling a mound of soil with peat about 30 cm in height over the plants. This not only insulates them from the cold, but also shields them against flooding during the thaw.