Hosta Sieboldiana 'Thunderbolt'

Plantain Lily, Siebold Hosta, Thunderbolt Plantain Lily

Hosta ‘Thunderbolt’ — a large perennial hosta with a broad, mounded form, prized for its thick blue-green leaves marked by a dramatic creamy yellow to white center streak. The broad, heavily corrugated foliage has exceptional substance, with each leaf showing irregular lightning-like center markings that create bold contrast in shade gardens. Pale lavender flowers rise above the foliage in early to midsummer and attract hummingbirds.

Type: Perennial
Mature Size: Width: 48–60 in | Height: 24–30 in (up to 36 in in flower)
USDA Zones: 3a–8b
Light: Partial shade to full shade
Soil / Water: Rich, well-drained soil; evenly moist conditions preferred
Wildlife: Hummingbirds

Features & Landscape Uses:



Dramatic center streaking gives strong specimen value 🌿



Thick leaves offer excellent slug resistance



Outstanding for woodland borders and focal planting



Mature clumps develop increasingly bold leaf pattern



Care:
Plant in fertile, moisture-retentive soil and protect from strong afternoon sun to preserve blue coloration and center contrast. Allow clumps to mature for best leaf pattern and divide only when necessary.

Plant type

Perennial

Height

24-30''

Width

48-60"

Hardiness zones

3–9

Sunlight

Full Shade, Partial Shade

Growth rate

Moderate

Bloom time

Mid Summer

Flower color

Lavender, White

Leaf color

Steel Blue, Vanilla

Fall color

Blue Green

Attracts

Bees, Hummingbirds

Soil

Moist well-drained, Rich

Landscape use

Accent Plant, Border, Container, Mass Planting

Shape

Broad, Clump, Mounded

Fragrant

Yes

Drought tolerant

No