This cultivar is an H. 'Tokudama'-type plant with blue-green foliage. It was originated by Mark Zilis but registered by Peter Ruh of Ohio in 2002. The large size mound grows to a height of around 19 inches with a spread of around 40 inches. Its near-white flowers bloom in clusters in July.

According to The Hostapedia by Mark Zilis (2009), "...I purchased a plant of what I thought was 'Blue Moon'...and began propagating it by tissue culture . After a few years, a number of collectors began noticing that this version of 'Blue Moon' was much larger than Eric Smith's true 'Blue Moon' and dubbed it "Big Blue Moon". Finally, in 1990, I named this mistaken plant 'Blue Splendor'."
 

An article by Warren I. Pollack in The Hosta Journal  (2020 Vol. 51 No. 1) titled Doppelgänger Hostas: Fancy Name for Look-alike Hostas, included a long list of hostas which various hostaphiles, published articles or other sources have indicated "look" the same. Some of these are, in fact, the same plant with two or more different names. Others are hostas that vary in some minor trait which is not immediately discernable to the casual observer such as seasonal color variations, bloom traits, ploidy, etc. So, as Warren mentions, hostaphiles may differ as to the plants listed but then, their opinions are based on visual observations and interpretations.

H. 'Blue Splendor' and H. 'Love Pat'.