Hosta Flemish Sky

Flemish Sky

Hosta 'Flemish Sky' — a medium to large blue hosta prized for its broad powdery blue leaves and strong upright mound. The foliage has thick substance and holds its cool blue coloration well through much of the season, especially in filtered shade, giving the plant a bold clean presence in the garden. Pale lavender flowers rise above the foliage in midsummer, adding soft seasonal interest while the foliage remains the primary ornamental feature.

Type: Perennial

Mature Size:
Width: 30–40 in
Height: 18–22 in (to ~28 in in flower)

USDA Zones: 3a–8b

Form: Upright, dense mound

Light: Partial shade to full shade; best blue color in filtered shade

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

Water: Moderate; prefers evenly moist soil

Wildlife: Attracts hummingbirds and bees

Features & Landscape Uses:
A striking blue hosta for woodland gardens, shade borders, foundation beds, and mixed hosta collections. Its cool foliage pairs especially well with gold or white-variegated hostas, ferns, and other shade perennials. Thick leaves provide good slug resistance.

Care:
Maintain consistent moisture and mulch annually to keep roots cool. Protect from strong afternoon sun to preserve the blue leaf coating. Remove spent flower stalks after bloom and clean old foliage in early spring. Divide mature clumps every few years if needed. 🌿

Plant type

Perennial

Height

18-22"

Width

30-40"

Hardiness zones

3–8

Sunlight

Full Shade, Partial Shade

Growth rate

Moderate

Bloom time

Mid Summer

Flower color

Lavender

Leaf color

Dark Spring Green

Attracts

Bees, Hummingbirds

Soil

Moist well-drained, Rich

Landscape use

Mass Planting

Shape

Dense, Mounded, Upright

Drought tolerant

No