Hosta 'Koriyama'

The plant above is labeled incorrectly as 'Koryama'.

This non-registered cultivar from Japan is a form of the species, H. sieboldii. This medium size hosta grows to about 12 inches high and spreads to about 28 inches in width with wavy leaves that are curved downward. It bears purple flowers in August.

Note: There seems to be a lot of confusion over this fine hosta as evidenced by the following comments from Mark Zilis. It appears that he is saying that H. 'Opipara' is actually H. 'Bill Brincka' but it could also be H. 'Koriyama' which could be H. 'Opipara Koriyama' which is the same as H. 'Mishima Fukurin Koba' that clear?

RE: H. 'Opipara' - Mark Zilis (2009) says, "...'Opipara' (or 'Bill Brincka') should be in every hosta collection...In the 1980s, however, I would not have given this plant such a glowing recommendation. Nearly every plant of 'Opipara' the United States was infected with a virus (probably Hosta Virus X). Fortunately, Bill Brincka...obtained a clean selection of this plant, which was marketed under his name..."

RE: H. 'Koryama' - According to The Hostapedia by Mark Zilis (2009), "When I first encountered this plant in the 1980s, it was purported to be a dwarf-size Hosta opipara, listed as Hosta opipara 'Koriyama'. A lot has changed since that time. Hosta opipara is now considered a cultivar (H. 'Opipara') and 'Koriyama' is the proper spelling for the plant (named for a mountain in northeastern Japan). More importantly, 'Koriyama' appears to be the same as 'Mishima Fukurin Koba', a form of Hosta sieboldii!"

RE: H. 'Bill Brincka' - Mark Zilis (2009) states, "...represents a virus -free version of 'Opipara'. Most 'Opipara' specimens in the U.S. were infected with a virus (probably Hosta Virus X) before Bill Brincka imported this clean plant from Japan. By whatever name, the plant is simply magnificent."

Mikiko Lockwood in an article on The Hosta Library titled, A Little About Japanese Hosta Terms defines the term koba as small leaf, 'Koba Gibōshi' or H. sieboldii, the term fukurin as margined or edged. and the term yama as mountain.

According to The Hostapedia, the correct spelling is with one "o".


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