Jonkheer van Tets is a Dutch variety of red currant. The shrubs grow up to about 1.8 m tall. Red currant fruits contain more vitamin C than lemons and are frost-resistant. Uses Red currant fruits are suitable for fresh consumption as well as for preserves, juices, liqueurs, jams, and jellies. Flowering and fruiting It flowers in April with yellow blossoms. The fruits are round, red, and gathered in long clusters. Red currant varieties fruit earlier than black ones, from early July to August. The fruits are very healthy, rich in vitamin C, P, B‑group vitamins, provitamin A, biotin, and folic acid. They also contain mineral salts, potassium, iron, calcium, magnesium, and trace elements such as manganese, boron, and iodine. Care It requires fertile, slightly acidic soil and benefits from fertilisation. Prefers sunny or semi‑shaded, wind‑sheltered positions. The shrub should be planted deeper than it grew in the pot. Young shrubs are planted in autumn or early spring, spaced 1–1.5 m apart. Pruning After planting, cut the seedling back to 2–3 buds. This encourages 6–9 young shoots in the first year. In the following years, thin the shrub to avoid excessive density. White currant fruits mainly on short shoots, so good branching is important. The best fruits appear on 2‑, 3‑ and 4‑year‑old skeletal branches. Do not cut one‑year shoots; remove only old 5‑ and 6‑year‑old ones. For the first 5 years, shorten one‑year shoots by half. Remove branches that overcrowd, cross, are weak, or lie on the ground. In the 6th year, in early spring or after harvest, remove the oldest 5‑year shoots and replace them with the same number of one‑year shoots, shortening them to encourage branching. The shrub should have 3–4 shoots of each age group. Maintaining this balance is the key to abundant yields.