Japanese Rush, Japanese Sweet Flag, Grassy-leaved Sweet Flag
Acorus gramineus 'Hakuro-nishiki'

Family: Araceae (a-RAY-see-ee) (Info)
Genus: Acorus (AK-or-us) (Info)
Species: gramineus (gram-IN-ee-us) (Info)
Cultivar: Hakuro-nishiki

Category:

Perennials

Ponds and Aquatics

Height:

under 6 in. (15 cm)

Spacing:

6-9 in. (15-22 cm)

9-12 in. (22-30 cm)

Hardiness:

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)

Sun Exposure:

Full Sun

Danger:

Unknown - Tell us

Bloom Color:

Cream/Tan

Inconspicuous/none

Bloom Time:

Mid Spring

Foliage:

Grown for foliage

Evergreen

Herbaceous

Chartreuse/Yellow

Smooth-Textured

Other details:

Requires consistently moist soil; do not let dry out between waterings

Very high moisture needs; suitable for bogs and water gardens

Soil pH requirements:

6.1 to 6.5 (mildly acidic)

6.6 to 7.5 (neutral)

7.6 to 7.8 (mildly alkaline)

Patent Information:

Unknown - Tell us

Propagation Methods:

By dividing rhizomes, tubers, corms or bulbs (including offsets)

Seed Collecting:

N/A: plant does not set seed, flowers are sterile, or plants will not come true from seed

Regional

This plant has been said to grow in the following regions:

Prospect, Kentucky

Baltimore, Maryland

Gardeners' Notes:

1
positive
1
neutral
0
negatives
RatingContent
Positive

On Oct 9, 2006, hilly8 from Baltimore, MD wrote:

I am having great success with this plant in Zone 7 (Baltimore, MD); full to part sun, average garden soil, cold hardy; excellent chartreuse accent in full sun; grows in concentric circles.

Neutral

On Oct 19, 2002, Baa wrote:

Small perennial cultivar from Japan.

Has fans of linear, yellow to acid green leaves borne in tufts.

Needs constantly moist soil in full sun. It's not fully frost hardy so will need some protection in frost prone regions.

Could be grown in indoor ponds as a marginal plant.