H. ‘Blaue Ruh’

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

Hosta ‘Blaue Ruh’ is a registered cultivar () , originated by H. Sugita.

Year registered2003
OriginatorH. Sugita
Section classII-2 (Large)

Overview

Registered in 2003 by Japanese breeder H. Sugita, Hosta 'Blaue Ruh' is a large blue-green cultivar notable for its intensely textured foliage and substantial mound-like habit. The leaves are ovate with cordate bases, deeply folded and moderately corrugated, with slightly rippled margins and a dull surface above and below.

In the Garden

'Blaue Ruh' reaches a mature spread of 44 inches (112 cm) and a height of 20 inches (51 cm), forming a dense, moderate-growing mound suited to partial to full shade in typical hosta-growing zones. Its substantial blue foliage pairs well with fine-textured companions such as ferns, Heuchera, or Carex, and its large size makes it appropriate as a specimen or in the middle to back of a shaded border.

Care Notes

Provide consistent moisture, particularly during dry periods, and apply a balanced slow-release fertilizer in early spring as new growth emerges. Standard slug and deer precautions are advisable, as with most large-leaved hostas.

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 height20 in (50.8 cm)
Clump width44 in (111.8 cm)
Leaf length12.25 in (31.1 cm)
Leaf width7.75 in (19.7 cm)
Leafblue to blue green slightly rippled margins; dull on top; dull underneath
Flower scape height34.5 in (87.6 cm)
Notable characteristicslarge size; light blue color

From the American Hosta Society Registry record.

Similar cultivars

Other registered hostas in the same AHS section class (II-2, large size):

Related guides

Registration data: AHS Registry #550. How we check this data.