grass RHS Award

Silver Spear Grass

Stipa calamagrostis

Not currently listed at our partner nurseries.

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Essentials

At a Glance

Plant Type

Grass

Height

36 inches

Width

36 inches

Light

Full Sun, Partial Sun

Zones

4, 5, 6, 7, 8, 9

Water

Moderate

Humidity

Average

Lifespan

Perennial

Native To

Eurasia

Toxicity

Non-toxic

The Story

Plant Bio

Stipa calamagrostis, commonly known as the silver plume grass, is a perennial grass characterized by its elegant, arching foliage and soft, feathery flower spikes that appear in late summer. This species is valued for its ornamental qualities, particularly its attractive seed heads that provide visual interest and movement in the garden.

Bloom Period:

EarlyLate

Uses & Benefits:

This grass provides elegant texture and movement in garden borders, especially with its feathery plumes in late summer.

Drought-tolerant and low-maintenance, ideal for xeriscaping and erosion control.

Supports pollinators and provides habitat for beneficial insects in native gardens.

Marketplace

Where to Buy

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Planting

How to Grow

Tuck seeds into well-draining soil in early spring for best germination.
Mist cuttings regularly to maintain humidity and root within 6 weeks.
Prune back dead or damaged foliage in late winter to promote healthy growth.
Mulch around the base to retain moisture and suppress weeds during summer.
Transplant established plants in early spring or fall for optimal survival.
Fertilize with a balanced slow-release fertilizer in spring and mid-summer.

Pro Tip

Ensure excellent drainage to prevent root rot and encourage dense foliage growth.

Keep It Thriving

Care Guide

Do

Water moderately, allowing soil to dry slightly between watering 🌱
Prune after flowering to maintain shape and health
Mulch annually to conserve moisture and suppress weeds
Fertilize in early spring with a balanced fertilizer
Transplant in early spring or fall for best results

Don't

Avoid overwatering which can lead to root rot ❌
Don’t prune in late fall or winter, wait until after flowering
Refrain from fertilizing during drought conditions
Don’t disturb roots when transplanting
Avoid planting in poorly drained soils

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

Silvery ornamental grass for bordersDrought-tolerant groundcoverTextural accent in prairie gardens

Companion Plants

Lavender Echinacea Russian Sage Sedum Yarrow

Multiply

Propagation Methods

Good to Know

Common Questions

Silver Spear Grass questions

What zones can Silver Spear Grass grow in?

Silver Spear Grass 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 Silver Spear Grass deer resistant?

Yes — Silver Spear Grass is rated deer-resistant. Deer typically pass it over, though extreme hunger can override any plant's defenses.

When does Silver Spear Grass bloom?

Silver Spear Grass typically blooms in early summer through early fall. Exact timing shifts a week or two with your zone — Sow's bloom calendar maps it to your garden.

Does Silver Spear Grass need full sun?

Silver Spear Grass does best in full sun to part shade. In hot climates, afternoon shade keeps blooms fresher longer.

Is Silver Spear Grass drought tolerant?

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