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Northwest Blooms · Groundcovers

Acorus gramineus ‘Ogon’

Golden Variegated Sweet Flag

Acorus gramineus ‘Ogon’
Family
Acoraceae
Height
6 to 12 inches
Width
12 to 18 inches
Flower color
Greenish-yellow
Foliage color
Golden-yellow
Bloom time
Late spring to early summer
Light
Partial to full shade
Water
Consistently moist to wet soil
Maintenance
Low
Growing zone
5 to 9
Wildlife
May provide shelter for small animals and insects

About this plant

Acorus gramineus 'Ogon' is a striking ornamental grass-like plant with vibrant golden-yellow foliage. This perennial herbaceous plant grows from rhizomes, forming dense clumps of linear, strap-like leaves that are about 1/4 to 1/2 inch wide and have a glossy texture. In late spring to early summer, it may produce small, inconspicuous greenish-yellow flowers on a spadix, but its main ornamental appeal comes from its colorful foliage. 'Ogon' prefers partial to full shade but can tolerate some sun if the soil is consistently moist.

Thriving in consistently moist to wet soil, it is well-suited to boggy or water garden conditions and is low-maintenance, not requiring regular pruning. 'Ogon' is commonly used as a ground cover in wet areas such as pond edges, water gardens, or damp woodland gardens, and can also be grown in containers or along the margins of streams or water features.

Works well in

Borders · Woodland Gardens · Containers · Rock Gardens

Companion plants

Hostas · Ferns · Ligularia · Japanese Iris · Astilbes · Heucheras

Design tip

Plant along pond edges, streams, or shaded pathways where its golden foliage brightens darker spaces and defines graceful borders.

Where to see it

This plant can be seen in the perennial border at the Bellevue Botanical Garden.