perennial

Japanese Sweet Flag

Name: Japanese Sweet Flag
Brand: Acorus
Availability: InStock

Acorus gramineus 'Oborozuki'

$35.00

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Essentials

At a Glance

Plant Type

Perennial

Height

10 inches

Width

10 inches

Light

Partial Sun, Shade

Zones

5, 6, 7, 8, 9

Water

Requires consistently moist soil

Humidity

Prefers humid environments

Lifespan

Perennial

Native To

Asia

Toxicity

Non-toxic to humans and pets

The Story

Plant Bio

Acorus gramineus 'Oborozuki' is a compact, grass-like perennial with slender, arching foliage and small, spike-like yellow-green flowers that create a delicate, ornamental appearance. This cultivar is distinguished by its bright, fan-like sprays of golden-yellow foliage striped with green, which are brightest in spring.

Uses & Benefits:

Provides lush, evergreen foliage that adds texture and color year-round.

Thrives in wet soils, making it ideal for water features and ponds.

Supports local pollinators and provides habitat for beneficial insects.

Marketplace

Where to Buy

Sooner Plant Farm

1+ Gal Pot

In Stock$35.00

Shipping costs Year-round shipping Free shipping

Planting

How to Grow

Tuck rhizomes into moist soil in early spring
Water regularly to keep soil consistently moist
Mulch around base to retain moisture and suppress weeds
Divide clumps every 3-4 years in spring or fall
Mist foliage during dry spells for best appearance
Remove dead or damaged leaves as needed

Pro Tip

Plant in moist, shaded areas for best growth and appearance.

Keep It Thriving

Care Guide

Do

Water regularly to keep soil moist 🌱
Mulch to retain soil moisture
Divide every few years for vigorous growth

Don't

Avoid dry, well-drained soils ❌
Don’t expose to full sun in hot climates
Refrain from over-fertilizing

Seasonal Care Calendar

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

Watch Out For

Pests & Diseases

Common Pests

Common Diseases

In the Garden

Landscape Uses & Companions

Landscape Uses

Shady water garden borderMoist woodland garden edgeAccent in shaded perennial beds

Companion Plants

Hosta Ferns Astilbe Ligularia Japanese iris

Multiply

Propagation Methods

Good to Know

Common Questions

Japanese Sweet Flag questions

What zones can Japanese Sweet Flag grow in?

Japanese Sweet Flag is hardy in USDA Zones 5–9. Inside that range it survives winter in the ground; outside it, grow it as an annual or a container plant you protect.

Is Japanese Sweet Flag deer resistant?

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

When does Japanese Sweet Flag bloom?

Japanese Sweet Flag typically blooms in late spring to early summer through late fall. Exact timing shifts a week or two with your zone — Sow's bloom calendar maps it to your garden.

Does Japanese Sweet Flag need full sun?

Japanese Sweet Flag does best in part shade.