H. ‘Sea Sapphire’

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

Hosta ‘Sea Sapphire’ is a registered cultivar () , originated by AHS, K. Walek.

Year registered2009
RegistrantAHS, K. Walek
Section classII-2 (Large)

Overview

Registered in 2009 by K. Walek (AHS), this large blue-green hosta arose from a seedling of unknown parentage. Its most distinctive features are the intensely blue-green margins, glaucous bloom on both leaf surfaces, and deeply corrugated, broadly ovate leaves with cordate bases.

In the Garden

'Hosta 'Sea Sapphire' forms an upright to mounding clump, with individual leaves reaching 10 inches (25.4 cm) in length and 8.5 inches (21.6 cm) in width. It performs best in partial to full shade, typical of blue-leaved hostas, where its glaucous coating remains most intact. The substantial, cupped foliage pairs well with ferns, astilbes, and other shade perennials that contrast in texture or color.

Care Notes

Provide consistent moisture during the growing season, particularly in warmer climates, and apply a balanced fertilizer in early spring as new growth emerges. The thick, corrugated leaves offer moderate resistance to slugs, though standard preventive measures are advisable in damp conditions.

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

Leaf length10 in (25.4 cm)
Leaf width8.5 in (21.6 cm)
Vein pairs16
Leafglaucous bloom on top; glaucous bloom underneath; cupped; deeply corrugated

From the American Hosta Society Registry record.

Parentage

  • Pod parent: seedling of unknown parentage

Registered cultivars that list Hosta ‘Sea Sapphire’ as a parent:

Similar cultivars

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

Related guides

Registration data: AHS Registry #5016. How we check this data.