H. ‘Ocean Isle’

Hosta 'Ocean Isle'
Illustration: The Hosta Farm Editorial Team.

Hosta ‘Ocean Isle’ is a registered cultivar () .

Year registered2006
Section classI-5b (Giant)

Overview

Registered in 2006, *Hosta* 'Ocean Isle' is a sport of *H.* 'El Dorado' distinguished by its giant size and bold, heavily rippled golden yellow margins surrounding a medium blue-green leaf center. The cultivar's broad, ovate leaves with cordate bases display a glaucous bloom on both surfaces and are notable for their high vein count (16 to 20 pairs), moderate corrugation, and wide margins measuring 1.5 to 3 inches (3.8 to 7.6 cm) across.

In the Garden

This hosta forms a dense, mound-like clump reaching 20 inches (50.8 cm) in height and 45 inches (114.3 cm) in diameter, with a moderate growth rate. It performs best in partial to full shade, where the blue-green centers contrast effectively with the gold margins; excessive sun may scorch the thin, rippled edges. The large scale makes it suitable as a specimen or focal point in shaded borders, and its substantial leaves pair well with ferns, astilbes, or other shade-tolerant perennials of contrasting texture.

Care Notes

Water regularly to maintain consistent moisture, especially during dry periods, and apply a balanced fertilizer in early spring as growth emerges. Like most large-leaved hostas, 'Ocean Isle' is susceptible to slug and deer damage, so protective measures may be necessary in areas where these pests are prevalent.

Size and leaf

Clump height20 in (50.8 cm)
Clump width45 in (114.3 cm)
Leaf length12.75 in (32.4 cm)
Leaf width10.75 in (27.3 cm)
Vein pairs20
Leafmedium blue-green with 1.5 to 3in (3.8 to 7.6cm) wide, golden yellow, heavily rippled margins; glaucous bloom on top; glaucous bloom underneath; lightly folded, moderately wavy, moderately corrugated
Flower scape height36–40 in (91.4–101.6 cm)
Seasonal colour changeemerges blue-green, develops a bright gold edge, center becomes rich green in summer
Notable characteristicswith high vein count, rippled edge, and wide gold margins

From the American Hosta Society Registry record.

Parentage

Similar cultivars

Other registered hostas in the same AHS section class (I-5b, giant size):

Related guides

Registration data: AHS Registry #4079