Abstract
The Japanese Elm (Ulmus japonica (Rehd.) Sarg.) has been tested at Peter the Great Botanic Garden since 2000, and it has reached the size of a well developed single-trunk tree, 11 m high, at the age of about 25 years old. The first fruiting was observed in 2014 at the age of about 17 years. The first seed reproduction was obtained in 2021, with germination power 20,3-24,7 %. The height of seedlings of the first year reaches 128-162 mm on average, with maximum height up to 295-340 mm. This species is one of the most stable to Dutch elm disease and is promising for cultivation and for restoration of Elm’s population in Saint-Petersburg.
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