Acorus gramineus ‘Ogon’

(Golden dwarf, Sweetflag)


Hardiness Zones:

 5a  5b  6a  6b  7a  7b  8a  8b  9a  9b

Quick Overview:

This grassy-leaved sweet flag cultivar is a dwarf plant which looks like a grass or small iris, but is actually a member of the acorus family. It has insignificant flowers and is grown primarily as a ground cover or accent. Features iris-like tufts of narrow, grass-like, variegated leaf blades (6-12″ tall and 1/4″ wide) which are striped with yellow and green but primarily appear as yellow. Tufts slowly spread by creeping roots to form a dense ground cover. Foliage is sweetly fragrant. Inconspicuous, sedge-like flower spikes (with spadixes to 3″ long) of tiny, densely-packed, greenish-yellow flowers appear in late spring to early summer. Flowers give way to tiny fleshy berries. Commonly called grassy-leaved sweet flag because of the aromatic, grass/iris-like foliage.


.Easily grown in average, medium to wet soils in full sun to part shade. Grows well in both boggy conditions (including very shallow water) and consistently moist garden soils. Scorched leaf tips will occur if soils are allowed to dry out. Appreciates some relief from hot summer sun (e.g., afternoon shade or filtered sun) when grown in hot summer climates. Slowly naturalizes by spreading roots, but is not too aggressive.

Additional information

Common Name

Golden dwarf, Sweetflag

Botanical Name

Acorus gramineus 'Ogon'


3 gallon

Evergreen or Deciduous


Hardiness Zone

5a, 5b, 6a, 6b, 7a, 7b, 8a, 8b, 9a, 9b

Growth Rate


Light Requirements

Part-shade, Part-sun, Shade, Sun





Soil Condition

Wet Soils

Water Needs




Foliage Color

Variegated – gold and green

Deer Resistant


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