End of April to October 15, daily except Mon and Thurs, noon - 6pm; Saturday and Sunday, noon - 8pm.
Added to JGarden:
The Moscow Japanese Garden was constructed from 1983 - 1987 under the direction of Ken Nakajima with assistance from architect Adachi Takeo and Watanabe Construction with financial support from the Embassy of Japan in Moscow and the 1970 Expo Memorial Foundation. The garden includes waterfalls, ponds, pavalions, a stone pagoda, stone lanterns (including, of course, a yukimi-doro). The site hosts more than 100 plant varieties, many of which were brought from Hokkaido, where the climate resembles that of Moscow. They include: irises, sakura, David's elm, Japanese rhododendron, momoji maple and many others.
The garden is open from the end April to October 15.
The garden is located at the Vladykino Metro station (Gray or #8 line) on the north end of Moscow.
The spring rain
Which hangs to the branches
Of the green willow
Looks like pearls
Threaded on a string.
Lady Ise Kokinshû(?) trans. by Arthur Waley 9th century