H. ‘Alleyne Cook’

Overview

Registered in 2003 by A. Cook, this medium-sized sport produces a mound-like clump of ovate, lightly cupped leaves. The foliage is medium blue-green with a glaucous bloom on both surfaces, edged by a flat yellow margin 0.5 to 1 inch (1.3–2.5 cm) wide. Each leaf measures 8.75 inches (22.2 cm) long by 5.5 inches (14.0 cm) wide, with ten vein pairs and a rounded base.

In the Garden

The plant reaches 22 inches (55.9 cm) in height and 42 inches (106.7 cm) in diameter, with a moderate growth rate. It performs best in partial to full shade, as is typical for blue-green hostas, where the glaucous bloom and yellow margins remain most stable. The 28- to 32-inch (71.1–81.3 cm) scapes carry pale lavender flowers in midsummer. Suitable companions include ferns, heucheras, and other shade-tolerant perennials; its medium size makes it appropriate for the middle of a border or as a specimen in a mixed shade bed.

Care Notes

Water regularly during dry spells, especially in the first growing season. Apply a balanced, slow-release fertilizer in early spring as new growth emerges. The thick leaves offer moderate resistance to slugs, though standard slug control measures are advisable in damp conditions. Deer may browse the foliage.