H. ‘Allegan Emperor’

AI-generated watercolor illustration of Hosta 'Allegan Emperor' (not a photograph)
AI-generated watercolor illustration by The Hosta Farm — not a photograph of this cultivar. How we use images

Hosta ‘Allegan Emperor’ is a registered cultivar () , originated by H. Deshane.

Year registered2000
OriginatorH. Deshane
RegistrantP. Ruh
Section classII-1 (Large)

Overview

Registered in 2000 by P. Ruh from the breeding work of H. Deshane, 'Allegan Emperor' is a large, mound-forming hybrid derived from Hosta nigrescens. Its distinguishing feature is a variegated leaf with dark green, slightly rippled margins and a very shiny upper surface, contrasting with a dull underside and cordate leaf base.

In the Garden

This cultivar reaches a mature size of 33 inches (83.8 cm) in diameter and 17 inches (43.2 cm) in height, with a moderate growth rate. It performs best in partial to full shade, typical of most hostas, and its substantial leaves make it suitable as a specimen or in mixed borders with other shade-tolerant perennials such as ferns or astilbes. Its large size precludes use in small containers.

Care Notes

Provide consistent moisture, especially during dry periods, and apply a balanced fertilizer in early spring as new growth emerges. Standard slug and deer precautions are advisable, as the broad, shiny leaves may attract these pests.

This summary was generated with AI from the registry record and has not been reviewed yet; the registry data on this page is the reference. How we use AI.

Size and leaf

Clump height17 in (43.2 cm)
Clump width33 in (83.8 cm)
Leaf length9.75 in (24.8 cm)
Leaf width8 in (20.3 cm)
Vein pairs12
Leafdark green slightly rippled margins; very shiny on top; dull underneath
Flower scape height40.5 in (102.9 cm)

From the American Hosta Society Registry record.

Parentage

  • Pod parent: Hybrid of H. nigrescens

Similar cultivars

Other registered hostas in the same AHS section class (II-1, large size):

Related guides

Registration data: AHS Registry #190. How we check this data.