grass

Dewey Blue Coastal Panicgrass

Panicum amarum 'Dewey Blue'

Not currently listed at our partner nurseries.

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Essentials

At a Glance

Plant Type

Grass

Height

36 inches

Width

24 inches

Light

Full Sun

Zones

4, 5, 6, 7, 8, 9

Water

Low

Humidity

Average

Lifespan

Perennial

Native To

North America

Toxicity

Non-toxic

The Story

Plant Bio

Panicum amarum 'Dewey Blue' is a perennial grass known for its fine, airy foliage and upright habit, producing soft blue-green leaves and delicate panicles of tiny flowers in late summer to autumn. This cultivar is distinguished by its striking blue-gray foliage that maintains its color throughout the growing season, providing a graceful, ornamental texture in the landscape.

Uses & Benefits:

Adds fine texture and movement to garden beds, especially in drought-prone areas.

Low water needs make it ideal for sustainable landscaping.

Provides habitat and food for native insects and birds.

Marketplace

Where to Buy

We couldn't find this plant listed online right now.

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Planting

How to Grow

Tuck seeds into well-draining soil in spring
Water regularly until established, about 2 weeks
Mist cuttings if propagating via divisions during early spring
Maintain soil moisture during dry periods
Divide clumps every 3–4 years in early spring
Mulch around base to retain moisture

Pro Tip

Use well-draining soil and avoid overwatering for best growth

Keep It Thriving

Care Guide

Do

Water during prolonged dry spells 💧
Prune dead or damaged foliage in late winter
Divide clumps in early spring to promote healthy growth

Don't

Overwater in winter ❌
Use heavy clay soil without amendment ❌
Neglect dividing mature clumps ❌

Seasonal Care Calendar

Task	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Divide
Prune

Watch Out For

Pests & Diseases

Common Pests

Common Diseases

In the Garden

Landscape Uses & Companions

Landscape Uses

Silver‑foliaged borderDrought-tolerant meadowVertical accent in native gardens

Companion Plants

Echinacea Little Bluestem Rudbeckia Switchgrass

Multiply

Propagation Methods

Good to Know

Common Questions

Dewey Blue Coastal Panicgrass questions

What zones can Dewey Blue Coastal Panicgrass grow in?

Dewey Blue Coastal Panicgrass is hardy in USDA Zones 4–10. Inside that range it survives winter in the ground; outside it, grow it as an annual or a container plant you protect.

Is Dewey Blue Coastal Panicgrass deer resistant?

Not reliably. Deer may browse Dewey Blue Coastal Panicgrass, especially tender spring growth — plan on repellents or fencing where pressure is high.

When does Dewey Blue Coastal Panicgrass bloom?

Dewey Blue Coastal Panicgrass typically blooms in late summer to fall through late summer. Exact timing shifts a week or two with your zone — Sow's bloom calendar maps it to your garden.

Does Dewey Blue Coastal Panicgrass need full sun?

Dewey Blue Coastal Panicgrass does best in full sun (6+ hours).

Is Dewey Blue Coastal Panicgrass drought tolerant?

Yes — once established (usually after the first full season), Dewey Blue Coastal Panicgrass handles dry spells with minimal watering. Water deeply its first year to build the root system that makes that possible.