H. ‘Rosedale Tractor Seat’

Hosta 'Rosedale Tractor Seat'
Illustration: The Hosta Farm Editorial Team.

Hosta ‘Rosedale Tractor Seat’ is a registered cultivar () .

Year registered1999
Section classI-1 (Giant)

Overview

Registered in 1999, 'Rosedale Tractor Seat' is a giant hosta cultivar produced from a cross between *H.* 'Galaxy' (pod parent) and *H.* 'Elegans' (pollen parent). It is visually distinctive for its exceptionally large, heavily textured blue-green leaves with medium green margins, a prominent glaucous bloom on both surfaces, and an upright, mounded growth habit.

In the Garden

This cultivar reaches a mature size of approximately 30 inches (76.2 cm) in height and 50 inches (127.0 cm) in diameter, with a slow growth rate. It performs best in partial to full shade, typical of hosta-growing zones, and is well-suited as a specimen plant or as a bold accent in the middle to back of a shaded border. Its substantial foliage pairs effectively with ferns, astilbes, and other shade-tolerant perennials; due to its giant size, it is not suitable for containers.

Care Notes

Provide consistent moisture, especially during dry periods, and apply a balanced fertilizer in early spring as new growth emerges. Slugs and deer may damage the foliage; regular monitoring and appropriate deterrents are recommended.

Size and leaf

Clump height30 in (76.2 cm)
Clump width50 in (127 cm)
Leaf length14 in (35.6 cm)
Leaf width12 in (30.5 cm)
Vein pairs17
Leafglaucous bloom on top; glaucous bloom underneath
Flower scape height19–22 in (48.3–55.9 cm)

From the American Hosta Society Registry record.

Parentage

Similar cultivars

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

Related guides

Registration data: AHS Registry #4834