Hosta Fort Knox

Plantain Lily Fort Knox Hosta

Hosta 'Fort Knox' — a large gold hosta prized for its thick, heavily corrugated golden-yellow leaves and bold architectural presence. The broad foliage forms a substantial mound with excellent substance, and the rich gold color intensifies through summer, especially with some morning sun. Pale lavender flowers rise above the foliage in midsummer, adding soft seasonal interest while the dramatic foliage remains the main ornamental feature.

Type: Perennial

Mature Size:
Width: 4–5 ft
Height: 24–30 in (to ~36 in in flower)

USDA Zones: 3a–8b

Form: Broad, mounded clump

Light: Partial shade to full shade; morning sun deepens gold color

Soil: Moist, well-drained soils rich in organic matter

Water: Moderate; prefers evenly moist soil

Wildlife: Attracts hummingbirds and bees

Features & Landscape Uses:
A bold specimen hosta for woodland gardens, large shade borders, foundation beds, and focal points. Its thick gold foliage contrasts especially well with blue hostas, dark green foliage plants, and ferns. Thick leaves provide excellent slug resistance.

Care:
Provide rich soil and consistent moisture for best growth. Morning sun improves gold coloration, but avoid strong afternoon heat. Remove spent flower stalks after bloom and clean old foliage in early spring. Mature clumps improve with age and need little division.

Plant type

Perennial

Height

24-30"

Width

4-5'

Hardiness zones

3–8

Sunlight

Full Shade, Partial Shade

Growth rate

Moderate

Bloom time

Mid Summer

Flower color

Lavender

Attracts

Bees, Hummingbirds

Soil

Moist well-drained, Normal, Rich

Landscape use

Specimen

Shape

Broad, Clump, Mounded

Drought tolerant

No