1-gallon. Hosta sum and substance. Hostas are considered hardy perennials that are low maintenance and grow well in shade in the pacific northwest. More resistant to slugs than other Hostas. One of the largest and most popular Hostas, this robust award winner has large leathery leaves of chartreuse that become gold as summer approaches. Lavender flowers in summer. This plant is several years old! Mature Size is 2-3 ft x 5-6 ft wide. Once established it grows quickly. Give it lots of room!