Acorus Species, Japanese Rush, Golden Japanese Sweet Flag, Grassy-leaved Sweet Flag

Acorusgramineus

Genus
Acorus (AK-or-us)
Species
gramineus (gram-IN-ee-us)
Synonym
Acorus gramineus var. japonicus
Acorus humilis
Acorus macrospadiceus
Acorus pusillus
Acorus xiangyeus
Sun Exposure
Sun to Partial Shade
Foliage
Grown for foliage
Evergreen
Good Fall Color
Provides Winter Interest
Height
12-18 in. (30-45 cm)
Spacing
6-9 in. (15-22 cm)
Hardiness
USDA Zone 5a: to -28.8 °C (-20 °F)
USDA Zone 5b: to -26.1 °C (-15 °F)
USDA Zone 6a: to -23.3 °C (-10 °F)
USDA Zone 6b: to -20.5 °C (-5 °F)
USDA Zone 7a: to -17.7 °C (0 °F)
USDA Zone 7b: to -14.9 °C (5 °F)
USDA Zone 8a: to -12.2 °C (10 °F)
USDA Zone 8b: to -9.4 °C (15 °F)
USDA Zone 9a: to -6.6 °C (20 °F)
USDA Zone 9b: to -3.8 °C (25 °F)
USDA Zone 10a: to -1.1 °C (30 °F)
USDA Zone 10b: to 1.7 °C (35 °F)
Bloom Color
Pale Green
Inconspicuous/none
Bloom Time
Mid Summer
Late Summer/Early Fall
Other Details
Category
Groundcovers
Perennials
Ponds and Aquatics
Water Requirements
Average Water Needs; Water regularly; do not overwater
Requires consistently moist soil; do not let dry out between waterings
Foliage Color
Chartreuse/Yellow
Where to Grow
Bloom Characteristics
Bloom Size
Other details
Soil pH requirements
Patent Information
Non-patented
Propagation Methods
By dividing rhizomes, tubers, corms or bulbs (including offsets)
Seed Collecting
Regional

This plant is said to grow outdoors in the following regions:

Folsom, California

Marietta, Georgia

Wilkes Barre, Pennsylvania

Missouri City, Texas

Bellingham, Washington

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Gardener's Notes:

2
positives
3
neutrals
0
negative
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H
Folsom, CA | June 2010 | positive

I divided into two before planting. In less than a year, both sections have doubled and I'm ready to divide again. It's a nice contrast...Read More

M
M
Hanover Twp., PA (Zone 6a) | January 2005 | positive

I know that this plant should have moisture but thank goodness plants can't read what we write about them. Mine is in part sun growing u...Read More

D
D
| March 2002 | neutral

One of the most striking and certainly the cutest of the sweet flags, this dwarf golden form makes a slowly spreading tuft of tiny golden...Read More

S
Oklahoma City, OK (Zone 7a) | August 2001 | neutral

Easily grown in average, medium wet to wet soils in full sun to part shade. Grows well in both boggy conditions (including very shallow w...Read More

J
J
MD &, VA (Zone 7b) | May 2001 | neutral

There are only 2 species in this genus of grass like evergreen perennials from stream banks and marshes in the northern hemispere.
...Read More

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