The Site Gardener

Plant Library

Explore 4,545 plants, with photos and growing details.

Back to Tools

← Back to plant results

Hosta 'Sum And Substance'

Hosta, Plantain Lily, Sum And Substance Plantain Lily

Hosta 'Sum and Substance' — a giant hosta prized for its enormous chartreuse to golden-yellow leaves and bold architectural presence. The broad, thick, slightly glossy foliage forms a massive mound, with color becoming richer gold when grown with some morning sun. Pale lavender to nearly white flowers rise on tall stems in midsummer, though the dramatic foliage remains the main ornamental feature.

Type: Perennial

Mature Size:
Width: 5–6 ft
Height: 30–36 in (to ~48 in in flower)

USDA Zones: 3a–8b

Form: Giant, 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:
One of the largest and most dramatic hostas for woodland gardens, specimen planting, large shade borders, and focal points. Its huge leaves create bold contrast with finer-textured ferns, smaller hostas, and shade perennials. Thick foliage offers very good slug resistance.

Care:
Provide rich soil and consistent moisture for best size and color. Morning sun enhances gold tones, but avoid strong afternoon heat in hotter climates. Allow ample room for mature spread. Remove spent flower stalks after bloom and clean old foliage in early spring. 🌿

Plant type
Perennial
Height
30-36''
Width
5-6'
Hardiness zones
3–8
Sunlight
Full Shade, Partial Shade
Growth rate
Moderate
Bloom time
Mid Summer
Flower color
Lavender
Leaf color
Olive Drab
Fall color
Chartreuse, Gold
Attracts
Bees, Hummingbirds
Soil
Moist well-drained, Rich
Landscape use
Border, Container, Mass Planting, Specimen
Shape
Broad, Clump, Rounded
Fragrant
Yes
Drought tolerant
No