H. ‘Sea Slate II’

Overview

Registered in 2009 by K. Walek of the American Hosta Society, 'Sea Slate II' is a large blue-green hosta distinguished by its broadly ovate, moderately corrugated leaves with a thin glaucous bloom on both surfaces. The cultivar produces a dense, semi-upright to mounded clump from a seedling of unknown parentage.

In the Garden

This large hosta forms a substantial clump reaching 24 inches (61.0 cm) in height and 53 inches (134.6 cm) in diameter, making it suitable as a specimen or focal point in shaded borders and woodland gardens. It performs best in partial to full shade with consistent moisture, and pairs well with ferns, astilbes, and other shade-tolerant perennials that complement its blue-green foliage. The semi-upright habit allows it to integrate into mixed plantings without overwhelming smaller companions.

Care Notes

Water regularly during dry periods to maintain leaf turgor and prevent edge burn. Apply a balanced slow-release fertilizer in early spring as new growth emerges; slug and deer damage may occur in typical hosta-growing zones, so monitoring and protective measures are advisable.