Garden hybrid

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

298 other cultivars

perennial

Unforgettable Hosta

Hosta x hybrida 'Unforgettable'

The Story

Plant Bio

Hosta x hybrida 'Unforgettable' is a perennial herbaceous plant known for its lush, broad, and variegated foliage with a graceful, mound-forming habit. It produces tall flower spikes with lavender to pale purple bell-shaped flowers in summer.

A sport of Hosta 'June', 'Unforgettable' features heart-shaped, blue-green leaves with a very wide, irregular, creamy-yellow margin that lightens to creamy-white as the season progresses. The leaves are of good substance.

Uses & Benefits:

Lush foliage provides ground cover and visual interest year-round.

Helps prevent soil erosion in shaded areas.

Supports beneficial insects and maintains soil health.

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

16 inches

Width

24 inches

Light

Partial Sun, Shade

Zones

4, 5, 6, 7, 8, 9

Water

Moderate

Humidity

Prefers moderate humidity

Lifespan

Perennial

Native To

Northeast Asia

Toxicity

Toxic to dogs, cats, and horses if ingested.

Bloom period

Mid-summer

In flower about 1 month of the year

Planting

How to Grow

Tuck dormant roots into well-draining soil in spring.
Water thoroughly after planting to settle soil.
Apply mulch around base to retain moisture.
Fertilize with balanced fertilizer in early spring.
Divide every 3–4 years to maintain health.
Protect from harsh afternoon sun in hot climates.

Pro Tip

Plant in partial shade for optimal leaf coloration and health.

Keep It Thriving

Care Guide

Do

Water regularly to keep soil moist 🌱
Mulch to conserve moisture and suppress weeds
Divide every few years to prevent overcrowding

Don't

Avoid direct afternoon sun which can scorch leaves ❌
Over-fertilizing can cause floppy growth
Don’t let soil dry out completely

Seasonal Care Calendar

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

Watch Out For

Pests & Diseases

Common Pests

Common Diseases

In the Garden

Landscape Uses & Companions

Landscape Uses

Shaded border with variegated foliageGroundcover in woodland gardens

Companion Plants

Ferns Astilbe Heuchera LigulariaJapanese painted fern

Multiply

Propagation Methods

Good to Know

Common Questions

Unforgettable Hosta questions

What zones can Unforgettable Hosta grow in?

Unforgettable Hosta 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 Unforgettable Hosta deer resistant?

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

When does Unforgettable Hosta bloom?

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

Does Unforgettable Hosta need full sun?

Unforgettable Hosta does best in part shade.