H. ‘Magnificent Obsession’

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

Hosta ‘Magnificent Obsession’ is a registered cultivar () .

Year registered1999
Section classI-7 (Giant)

Overview

Registered in 1999, 'Magnificent Obsession' is a giant hosta resulting from a cross between Hosta 'Galaxy' (pod parent) and Hosta hypoleuca (pollen parent). This cultivar is visually distinctive for its exceptionally large, blue-green leaves that reach nearly 14 inches in length and 12 inches in width, with slightly rippled margins and a glaucous bloom on the undersides.

In the Garden

'Magnificent Obsession' forms an upright, fast-growing clump reaching 32 inches in height and 51 inches in diameter, making it suitable as a specimen or focal point in shaded to partly shaded borders. Its substantial leaves pair well with ferns, astilbes, and other shade-tolerant perennials that contrast in texture and scale. The plant's large size and rapid growth rate make it less suited for containers and better placed in open garden beds where it can spread freely.

Care Notes

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

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 height32 in (81.3 cm)
Clump width51 in (129.5 cm)
Leaf length13.75 in (34.9 cm)
Leaf width12 in (30.5 cm)
Vein pairs13
Leafmedium green streaked slightly rippled margins; slightly shiny on top; glaucous bloom underneath
Flower scape height32–39 in (81.3–99.1 cm)

From the American Hosta Society Registry record.

Parentage

Similar cultivars

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

Related guides

Registration data: AHS Registry #3600. How we check this data.