H. ‘Sea Thunder’

Overview

Registered in 2009 by K. Walek of the American Hosta Society, *Hosta* 'Sea Thunder' is a sport of *Hosta* 'Sea Lightning'. This medium-sized cultivar is visually defined by its elliptic to ovate leaves with creamy yellow to white centers and dark green, slightly rippled margins.

In the Garden

'Sea Thunder' forms a mound-like clump reaching 20 inches (50.8 cm) in height and 48 inches (121.9 cm) in diameter, with a moderate growth rate. It performs best in partial to full shade, typical for variegated hostas, and pairs well with ferns, heucheras, and other shade-tolerant perennials. Its moderate size makes it suitable for mid-border positions or as a specimen in woodland gardens.

Care Notes

Water regularly to maintain consistent soil moisture, especially during dry periods. Apply a balanced, slow-release fertilizer in early spring as new growth emerges. Slugs and deer may cause damage; monitor and manage as needed in typical hosta-growing zones.

Additional Details

Leaves measure 8 inches (20.3 cm) long by 4.5 inches (11.4 cm) wide, with nine pairs of veins and a moderately corrugated, lightly wavy texture. The margins are 0.75 inches (1.9 cm) wide and dark green with slight rippling. Scapes reach 36 inches (91.4 cm) in height, green streaked with cream and white.