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 Swamp Thing

Hosta x hybrida 'Swamp Thing'

The Story

Plant Bio

Hosta 'Swamp Thing' is a perennial with large, heavily corrugated, dark green leaves and spikes of bell-shaped, pale lavender flowers, creating a bold textural statement in shaded areas.

This cultivar is distinguished by its vigorous growth and deeply puckered, slug-resistant, swampy-green foliage, forming a dense, impressive mound.

Uses & Benefits:

Hostas add lush foliage and texture, thriving in shaded gardens.

Their dense leaves suppress weeds and retain soil moisture.

Provides habitat and nectar for beneficial insects and pollinators.

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

12 inches

Width

24 inches

Light

Partial Sun, Shade

Zones

4, 5, 6, 7, 8, 9

Water

Regular watering to keep soil moist

Humidity

Prefers humid environments

Lifespan

Many years with proper care

Native To

Eastern 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

Select a shaded spot with moist, well-drained soil.
Tuck young plants into the ground, spacing 12-24 inches apart.
Mist cuttings or seedlings regularly to keep soil moist.
Mulch around the base to retain moisture and suppress weeds.
Fertilize lightly in early spring with a balanced fertilizer.
Watch for pests like slugs and treat organically if needed.

Pro Tip

Plant in shaded areas with rich, moist soil for best growth.

Keep It Thriving

Care Guide

Do

Water regularly to keep soil moist 🌱
Apply mulch to conserve moisture
Divide clumps every 3-4 years to maintain vigor

Don't

Avoid full sun exposure ❌
Don't let soil dry out completely
Refrain from over-fertilizing

Seasonal Care Calendar

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

Watch Out For

Pests & Diseases

Common Pests

Common Diseases

In the Garden

Landscape Uses & Companions

Landscape Uses

Shaded border with variegated foliageTextured groundcover under treesCool, calming shade garden

Companion Plants

Ferns Astilbe HeucheraJapanese painted fern Ligularia

Multiply

Propagation Methods

Good to Know

Common Questions

Hosta Swamp Thing questions

What zones can Hosta Swamp Thing grow in?

Hosta Swamp Thing 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 Swamp Thing deer resistant?

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

When does Hosta Swamp Thing bloom?

Hosta Swamp Thing 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 Swamp Thing need full sun?

Hosta Swamp Thing does best in part shade.