Registered by Ed Schulz of Iowa in 2012, this
upright growing cultivar
is of unidentified parentage. It is a large size (26 inches
high by 42 inches wide) hosta with green yellow foliage.
The leaves are broadly ovate, moderately corrugated,
wavy and dull on top. Tubular flowers bloom from
mid-June into July on scapes 22 to 30 inches tall.
According to the registration materials: "...sun fast, abundant bloom scapes and flowers...changes to golden yellow..."
An article in
Hosta Journal, (2017 Vol. 48 No 1), says that the Ohh! stands for Old Home Hostas.