Golden Japanese Sweet Flag
Acorus gramineus 'Wogon'
Essentials
At a Glance
Plant Type
Groundcover
Height
8 inches
Width
12 inches
Light
Partial Sun, Shade
Zones
5, 6, 7, 8, 9
Water
Medium to wet
Humidity
Prefers humid environments
Lifespan
Perennial
Native To
Asia
Toxicity
Non-toxic
The Story
Plant Bio
Acorus gramineus 'Wogon' is a low-growing, grass-like perennial with narrow, arching foliage that forms dense clumps, producing small, inconspicuous flowers and vibrant foliage in varying shades of green and yellow. This cultivar is distinguished by its bright golden-yellow, grass-like foliage that brightens up shady, wet areas of the garden. The foliage is fragrant when bruised.
Bloom Period:
Uses & Benefits:
Marketplace
Where to Buy
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 plants to retain moisture
- Divide clumps every 2-3 years in early spring
- Remove dead or damaged foliage as needed
- Monitor for pests and treat organically if detected
Pro Tip
Plant in partial shade with moist, well-drained soil for best results.
Keep It Thriving
Care Guide
Do
- Water regularly to keep soil moist 🌱
- Mulch to retain soil moisture
- Divide every 2-3 years for vigorous growth
Don't
- Avoid drought conditions ❌
- Don’t let soil dry out completely
- Avoid planting in overly dry or sunny spots
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
Companion Plants
Multiply
Propagation Methods
Good to Know
Common Questions
Golden Japanese Sweet Flag questions
What zones can Golden Japanese Sweet Flag grow in?
Golden Japanese Sweet Flag is hardy in USDA Zones 5–10. Inside that range it survives winter in the ground; outside it, grow it as an annual or a container plant you protect.
Is Golden Japanese Sweet Flag deer resistant?
Yes — Golden Japanese Sweet Flag is rated deer-resistant. Deer typically pass it over, though extreme hunger can override any plant's defenses.
When does Golden Japanese Sweet Flag bloom?
Golden Japanese Sweet Flag typically blooms in late spring through late spring. Exact timing shifts a week or two with your zone — Sow's bloom calendar maps it to your garden.
Does Golden Japanese Sweet Flag need full sun?
Golden Japanese Sweet Flag does best in part shade.
More Acorus to compare
Variegated Sweet Flag
Acorus calamus 'Golden Variegated'
Licorice Japanese Sweet Flag
Acorus gramineus 'Licorice'
Variegated Japanese Sweet Flag
Acorus gramineus 'Hakuro Nishiki'
Dwarf Sweet Flag
Acorus gramineus 'Pusillus'
Variegated Sweet Flag
Acorus calamus 'Variegatus'
Japanese Sweet Flag Ogon
Acorus gramineus 'Ogon'
Keep exploring
Explore the genus
Collections featuring this plant
Grow Golden Japanese Sweet Flag with confidence
See it in a design of your actual yard, get zone-matched care reminders, and track it season by season in your garden journal.
