H. ‘Dr Topper Hagerman’

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

Hosta ‘Dr Topper Hagerman’ is a registered cultivar () .

Year registered2016
Section classII-2 (Large)

Overview

Registered in 2016, Hosta 'Dr Topper Hagerman' is a large, mound-forming cultivar resulting from a cross between Hosta 'Great Expectations' (pod parent) and Hosta 'Sagae' (pollen parent). Its most distinctive feature is the heavy glaucous bloom on both leaf surfaces, which produces an intense blue-green coloration on nearly round, cordate-based foliage.

In the Garden

'Dr Topper Hagerman' reaches 24 inches (61 cm) in height and 40 inches (102 cm) in diameter at maturity, forming a dense, upright mound. It performs best in partial to full shade, typical for blue-leaved hostas, where the glaucous bloom is most pronounced. The substantial leaves and bold form make it suitable as a specimen or in mass plantings with fine-textured shade perennials such as ferns or Heuchera.

Care Notes

Provide consistent moisture, especially during establishment, and apply a balanced fertilizer in early spring as new growth emerges. The thick, glaucous leaves offer moderate slug resistance, though standard slug control measures may be needed in wet seasons; deer will browse this cultivar as they will most 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 height24 in (61 cm)
Clump width40 in (101.6 cm)
Leaf length11 in (27.9 cm)
Leaf width10.5 in (26.7 cm)
Vein pairs14
Leafmedium blue-green flat margins; glaucous bloom on top; glaucous bloom underneath
Flower scape height24–28 in (61.0–71.1 cm)
Notable characteristicsLarge, upright plant with blue-green leaves. Glaucous bloom causes impressive coloration

From the American Hosta Society Registry record.

Parentage

Similar cultivars

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

Related guides

Registration data: AHS Registry #1502. How we check this data.