Aronia can be multiplied in three different ways.
The first method is generative, from seed. The seeds are separated from the fruit and washed in thick sieve, dried and stored in a dry place until October. Afterwards, to prepare it for sowing it is good to spread the seeds on the filter paper, drench it, wrapped in a sheet and put it in a plastic bag in the refrigerator to stay there up to March next year. This way stratification is done on temperature between + 4 and -5 Celsius for 4-5 months. In March, this seed is sown in containers in a sterile substrate for the production of seedlings. It’s important to keep this containters in a warm place. Its germination is done in about three weeks. About a month after young plants are planted at longer distances, for example 10 x 10cm, which are cultivated for about two months and then finally planted into the field.
During the summer seedlings can be kept in the nursery until October with mandatory watering. While this time, the seedlings grow up to 10 - 15cm in high and it will take another year of growth in the nursery until permanent planting in the field. The distance between the rows in nursery should be minimum 80cm so the weeds can be destroyed by machine or manually. In the lane plants can be planted more condense, at 15 - 20cm. Since in nurseries herbicides are not allowed, pulling weeds is done by hand. During the season, protection against pests and diseases is not necessary because chokeberry is very resistant. If near the nurseries grows some weeds and wild orchards, aphids can show on plants but they cannot damage the plant. Well-cultivated plants will fight against predators.
Second method of propagation is by dividing the seedling into few new plants. This should be prepared by adding ground around the roots of older plant. With regular watering and weeds removing, for one growing season it can be obtained few branches which are rooted and once cut off they can be used as new plants. They can be planted in a permanent place or in the nursery, depending on their development. These trees are not uniform, particularly in terms of root development. Therefore, in practice there is not such a good experience and reliance in plants produced this way. Only plants with well-developed roots will turn out good, the other will dry out.
The third is the most effective method of reproduction. Chokeberry is propagated vegetatively, from meristems, in vitro and in tissue culture. This way offspring are uniformed and from one chosen plant, the parent plant, multiplied in infinite required number. Such plants can be produced only well-trained staff in well-equipped laboratories for tissue culture, such as is the one in Superior Velika Plana. The procedure is described in the photo strip. In this way, compared to growing from seed, seedling from labs have "one year" when moving out to the greenhouse, for acclimatization. From June to October, these plants will be two years, compared to plants produced from seeds. In addition, they are completely healthy or so called virus free seedlings. Root is developed to maximize reception of all plants.