This hybrid of H. 'Yellow Splash' × H. 'Neat Splash' was
Paul Aden of New York in 1978. It is a medium size plant that
grows about 14 inches tall by 34 inches wide. The foliage is
heavily streaked with yellow to creamy white and green. Some
specimens are green with whitish streaks or a white marginal
variegation. The leaves have smooth texture and thin substance.
It bears bright purple flowers from late July into August
followed by viable seeds.
The Hostapedia by Mark Zilis (2009), "Despite the difficulty of maintaining its true form,
'Swoosh' has been an outstanding hybridizing plant. Used as a
pod parent, 'Swoosh' produces a high percentage of variegated
seedlings...Some of the best to come out of 'Swoosh' breeding
include 'Leola Fraim', 'Harpoon', 'Dark Star', 'Iceberg', and
The New Encyclopedia of Hostas by
Grenfell (2009) states: "A rare, much-prized breeding plant. Striping
quickly reverts to marginal variegation unless the plant is divided often."