H. ‘Cosmic Breeder’

Hosta 'Cosmic Breeder'
Illustration: The Hosta Farm Editorial Team.

Hosta ‘Cosmic Breeder’ is a registered cultivar () .

Year registered2010
Section classII-7 (Large)

Overview

Registered in 2010, 'Cosmic Breeder' is a large hosta resulting from a cross between (*H. 'My Mom' × H. 'Ma Breeder'*) and *H. 'Cosmic Hippie'*. Its most distinctive feature is the streaked dark green and medium blue-green foliage, with broadly ovate, moderately corrugated leaves that have slightly rippled margins and a cordate base.

In the Garden

This cultivar forms a slow-growing, mound-like clump reaching 38 inches (96.5 cm) in diameter and 20 inches (50.8 cm) in height. It performs best in partial to full shade, typical for blue-green hostas, where the leaf color remains truest. Its substantial size makes it suitable as a specimen or in the middle to back of shaded borders, paired with ferns or woodland perennials.

Care Notes

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

Size and leaf

Clump height20 in (50.8 cm)
Clump width38 in (96.5 cm)
Leaf length10.25 in (26 cm)
Leaf width7.75 in (19.7 cm)
Vein pairs15
Leafstreaked dark green, medium blue-green slightly rippled margins; dull on top; dull underneath; moderately wavy, moderately corrugated
Flower scape height23–25 in (58.4–63.5 cm)

From the American Hosta Society Registry record.

Parentage

Similar cultivars

Other registered hostas in the same AHS section class (II-7, large size):

Related guides

Registration data: AHS Registry #1170