In early spring, when hostas are coming up, mix 10 parts water to 1 part ammonia, and pour over plant and soil. This will kill slug larvae.
Hosta 'War Paint' Large pointed and heavily piecrusted leaves emerge in spring with a striking, irregular butter-yellow center framed by a dark green border. Yellow center holds for a few weeks and then begins to fade to chartreuse. By mid June the center fades to pale green and the show is over for the season. Pale violet flowers late in the spring. Good substance and vigor.