H. ‘James Knox Polk’

Overview

Registered in 2010 by P. & J. Ruh, this large, upright cultivar is distinguished by its light green, slightly rippled leaf margins and cupped, folded, ovate leaves with cordate bases. The foliage is slightly shiny on the upper surface and dull beneath, with 11 vein pairs, and the plant produces pale green scapes reaching up to 90.2 cm (35.5 in) in height.

In the Garden

'Hosta 'James Knox Polk' reaches a mature spread of approximately 79 cm (31 in) and a height of 74 cm (29 in), with a moderate growth rate. It performs best in partial to full shade, typical of most hostas, and its upright habit makes it suitable for mid-border positions or as a specimen plant. Companion plants include ferns, heucheras, and other shade-tolerant perennials; its large size precludes container cultivation.

Care Notes

Water regularly during dry periods, particularly in the first growing season, and apply a balanced fertilizer in early spring as new growth emerges. This cultivar is susceptible to slug and deer damage, requiring standard protective measures in areas where these pests are prevalent.