Japanese Rush, Japanese Sweet Flag, Grassy-leaved Sweet Flag
Acorus gramineus 'Licorice'

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

Category:

Groundcovers

Perennials

Ponds and Aquatics

Foliage Color:

Chartreuse/Yellow

Bloom Characteristics:

Unknown - Tell us

Water Requirements:

Average Water Needs; Water regularly; do not overwater

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

Where to Grow:

Unknown - Tell us

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)

Sun Exposure:

Sun to Partial Shade

Danger:

Parts of plant are poisonous if ingested

Bloom Color:

Pale Green

Inconspicuous/none

Bloom Time:

Mid Summer

Late Summer/Early Fall

Foliage:

Grown for foliage

Evergreen

Variegated

Provides winter interest

Other details:

Unknown - Tell us

Soil pH requirements:

Unknown - Tell us

Patent Information:

Unknown - Tell us

Propagation Methods:

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

Seed Collecting:

Unknown - Tell us

Regional

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

,

Gardeners' Notes:

1
positive
1
neutral
0
negatives
RatingContent
Neutral

On Jul 11, 2015, coriaceous from ROSLINDALE, MA wrote:

The US FDA has banned the sale of A. gramineus and A. calamus as medicine, as the root has proven to be carcinogenic even at low doses.

Positive

On Jul 11, 2015, Lodewijkp from Zwolle
Netherlands (Zone 7a) wrote:

EDIT

first of al gramineus doesn't prove to be carcinogenic, it does contain beta asarone but not as much as acorus calamus. second it also depends if its a triploid or diploid , triploid species contain up to 11 % B-asarone while diploid contain around 0,2 % B-asarone. A-asarone is absent in most species but is present in gramineus. A-asarone is a anti-carcinogen.

so it's not the plant that's carcinogenic , it's the genetics and combination of constituents. Cultivars bred for consumption are often lower in B-asarone. B-asarone rich plants have a more wintergreen like taste somewhat like gaultheria procumbens but stronger and almost nutmeg like. while very sweet liquorice tasting plants like this cultivar has more A-asarone and less B-asarone.

... read more