Golden Sweet Flag

Acorus gramineus ‘Ogon’

Plant Details

USDA Plant Hardiness Zones: 5b-11 Find Your Zone

Plant Type: Ornamental Grass

Height or Length at Maturity: 12″

Width at Maturity: 12″+
Spacing: 12-15″ apart for groundcover or solid border edging

Growth Habit / Form: Arching, Clumping, Upright

Growth Rate: Slow to Moderate

Flower Color: N/A
Flower Type: N/A

Flower Size: N/A
Flowering Period: N/A

Fragrant Flowers: N/A

Foliage Color: Bright Yellow, Golden, Green

Fragrant Foliage: No

Berries: No

Sun Needs: Full Sun, Pat Sun, Mostly Shade. Appreciates Afternoon Shade in Warmer Climates

Water Needs: Average, High

Soil Type: Clay, Loam, Sand, Silt

Soil Drainage: Well Drained, Moderately Drained, Poorly Drained

Soil pH: 5.5 – 6.5

Maintenance / Care: Very Low

Attracts: Visual attention

Resistances: Deer, Disease, Mildew, Drought, Heat, Humidity, Shade, Insect

Description

If you like bold color, Golden Sweet Flag will be one of if not the brightest plants in your woodland, shade, or bog garden! Acorus gramineus ‘Ogon’, is a neat looking maintenance-free plant with thin bright yellow blades that fan outwards to form grass-like tufts about 10 to 12 inches tall. The plant spreads by underground rhizomes to form a groundcover when spaced close enough (12 to 15 inches apart). The leaves are sweetly fragrant when bruised, hence the name.

Landscape & Garden Uses

Growing 10 to 12 inches tall and spreading slowly by rhizomes to 15 inches or more wide, Golden Sweet Flag is a perfect choice for use as a bright accent, border edger or groundcover in consistently moist to wet sites. It looks great around rocks and boulders around the garden pond and can even be grown in a container situated at the margins of the pond. Also nice as a grassy-textured and colorful accent in combination container gardens with other plants that like a moist soil and part shade to shade. A colorful addition to bog gardens and damp areas in ornamental grass gardens, rock gardens, woodland gardens, and yellow theme gardens.

Suggested Spacing: 12-15 inches for mass plantings; 24 inches or more for space between plants

How To Measure Total Square Feet Of A Planting Area

How Many Plants Needed To Cover A Planting Area?

Note: For our customers who live and garden north of USDA Plant Hardiness Zone 5a, where this Sweet Flag variety is not reliably winter hardy, you’ll be happy to know it can be grown in containers that can be brought indoors during winter and placed back outside when temperatures warm up in spring.

Growing Preferences

Golden Sweet Flag is very easy to grow in most any consistently moist to wet soil of average fertility and full sun to part shade. That said, it likes some afternoon shade in warmer climates. Can be grown in pots that are situated at the margins of the garden pond. Acrous is essentially maintenance free. It slowly naturalizes into clumps by spreading roots but is not invasive at all. We rarely fertilize or prune it. In areas that experience colder winters the foliage may need to be groomed or cut back to the ground before new growth emerges in spring.

Helpful Articles

Click on a link below to find helpful advice from our experts on how to plant, fertilize, prune and water Acorus Sweet Flag plants.

How To Plant And Care For Sweet Flag Acorus Plants

How To Measure Total Square Feet Of A Planting Area

How Many Plants Needed To Cover A Planting Area?

Plant Long & Prosper!

Meet The Wilson Brothers & Staff

Questions? Contact Us!

We live in zone 8 with hot humid summers. We have a garden area that has heavy clay and many plants experience root rot despite amendments and antifungal treatments. We call it the circle of doom. We bought Golden Sweet Flag from Wilson Bros to try out a plant that likes water and the sweet flag is thriving! It’s one of the only plant that hasn’t died. It looks beautiful next to a small allium plant. We will buy more to fill in this area. Thank you for carrying this product!————————————————————You’re welcome and thanks for the photo. We are so glad you are pleased and we hope you enjoy your purchase for years to come! Thanks for the kind words and wonderful review! 🙂 Beth Steele | WBG