Variety from Russia
Originally from Siberia, this is one of the most popular and favored black tomatoes. Originally introduced from Irkutsk, Russia and is regarded as a "true Siberian tomato" that does very well in cooler climates. Until only recently this was considered a rare variety. However, it's popularity has grown so much in Russia that there is now a company in Volgograd that is producing an extract of the Black Prince called "Black Prince Tomato Oil." The Black Prince tomato is said to have considerable health benefits beyond the presence of lycopene
Site & Soil:
Tomatoes are warm-season plants and should be planted only after danger of frost has passed. Temperature is an important factor in the production of tomatoes, which are particularly sensitive to low night temperatures. Blossom drop can occur in early spring when daytime temperatures are warm, but night temperatures fall below 55 degrees F as well as in summer, when days are above 90 degrees F and nights above 76 degrees F. Soil Requirements Tomatoes can be grown on many different soil types, but a deep, loamy soil, well-drained and supplied with organic matter and nutrients is most suitable. As with most garden vegetables, tomatoes grow best in a slightly acid soil with a pH of 6.2 to 6.8.
Note that wherever the number of seeds is indicated in grams, there may be more or fewer seeds in the package because the seeds are not the same size and weight.
If indicated in grams, the number of seeds loses relevance and is only there to show the approximate number of seeds in the package.
For example "Price for pack of 50 (1g) seeds." so you are not buying the number of seeds but the weight.