H. ‘Poseidon’

Overview

Registered in 2010 as a sport of an unidentified parent, *Hosta* 'Poseidon' is a large, fast-growing cultivar distinguished by its very shiny, pale green leaves with wide, white, slightly rippled margins. It is notable for producing double flowers on a scape characteristic of *Hosta plantaginea* types, a rare combination in the genus.

In the Garden

This cultivar forms a dense, mound-like clump reaching 20 inches (50.8 cm) in height and 45 inches (114.3 cm) in diameter. Its large, ovate leaves with rounded bases and lightly wavy edges make it a strong specimen for partial to full shade in typical hosta-growing zones. The pale green foliage with broad white margins provides contrast when paired with dark-leaved perennials or ferns, though its substantial size limits container suitability.

Care Notes

Provide consistent moisture during dry periods, particularly in the first growing season to establish the root system. Apply a balanced, slow-release fertilizer in early spring as new growth emerges. Slugs and deer may damage the foliage, requiring monitoring and control measures in susceptible gardens.