Garden hybrid

This is a garden hybrid, bred from more than one wild species, so it has no single species page of its own.

299 other cultivars

perennial

Hosta Neptune

Hosta x hybrida 'Neptune'

The Story

Plant Bio

Hosta 'Neptune' is a perennial renowned for its large, wedge-shaped, heavily rippled blue-green leaves and elegant, bell-shaped lavender flowers that bloom in summer.

This cultivar is distinguished by its striking, powdery-blue, wedge-shaped leaves with heavily rippled margins that cascade downwards, resembling a fountain. It holds its blue color well into the summer.

Uses & Benefits:

Hosta Neptune offers lush, variegated foliage that enhances shaded garden areas, providing visual interest year-round.

Its drought tolerance once established makes it a low-maintenance choice for shaded borders.

Provides habitat and nectar for insects, supporting garden biodiversity.

Garden hybrid

Bred from more than one wild species, so it has no species page of its own.

Essentials

At a Glance

Plant Type

Perennial

Height

22 inches

Width

40 inches

Light

Partial Sun, Shade

Zones

4, 5, 6, 7, 8, 9

Water

Moderate

Humidity

Moderate to high

Lifespan

Perennial

Native To

Asia

Toxicity

Toxic to dogs, cats, and horses

Bloom period

Mid-summer – Late summer

In flower about 2 months of the year

Planting

How to Grow

Tuck seeds or divisions into well-drained, humus-rich soil in spring.
Water regularly to keep soil moist but not waterlogged.
Mist cuttings lightly to encourage root growth.
Apply a balanced fertilizer in early spring for optimal growth.
Mulch around plants to retain moisture and suppress weeds.
Divide clumps every 3-4 years to maintain vigor.

Pro Tip

Plant in dappled shade with rich, moist soil for best results.

Keep It Thriving

Care Guide

Do

Water consistently, especially during dry periods 🌱
Mulch to conserve moisture and prevent weeds
Fertilize in early spring for healthy growth

Don't

Avoid waterlogging soil ❌
Do not expose to direct, harsh afternoon sun
Refrain from over-fertilizing to prevent leaf scorch

Seasonal Care Calendar

Task	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Divide
Fertilize
Pest Check
Spring Cleanup

Watch Out For

Pests & Diseases

Common Pests

Common Diseases

In the Garden

Landscape Uses & Companions

Landscape Uses

Shaded woodland borderSilver-foliaged groundcoverFragrant shaded border

Companion Plants

Astilbe Ferns HeucheraJapanese painted fern Ligularia

Multiply

Propagation Methods

Good to Know

Common Questions

Hosta Neptune questions

What zones can Hosta Neptune grow in?

Hosta Neptune is hardy in USDA Zones 4–9. Inside that range it survives winter in the ground; outside it, grow it as an annual or a container plant you protect.

Is Hosta Neptune deer resistant?

Not reliably. Deer may browse Hosta Neptune, especially tender spring growth — plan on repellents or fencing where pressure is high.

When does Hosta Neptune bloom?

Hosta Neptune typically blooms in mid-summer through late summer. Exact timing shifts a week or two with your zone — Sow's bloom calendar maps it to your garden.

Does Hosta Neptune need full sun?

Hosta Neptune does best in part shade.