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

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

Category:

Ornamental Grasses and Bamboo

Perennials

Ponds and Aquatics

Height:

6-12 in. (15-30 cm)

12-18 in. (30-45 cm)

Spacing:

9-12 in. (22-30 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)

Sun Exposure:

Sun to Partial Shade

Danger:

Unknown - Tell us

Bloom Color:

Chartreuse (Yellow-Green)

Inconspicuous/none

Bloom Time:

Late Spring/Early Summer

Foliage:

Grown for foliage

Herbaceous

Variegated

Aromatic

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:

Unknown - Tell us

Patent Information:

Unknown - Tell us

Propagation Methods:

Unknown - Tell us

Seed Collecting:

Unknown - Tell us

Regional

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

Crown Point, Indiana

Elizabeth City, North Carolina

Emerald Isle, North Carolina

Mountlake Terrace, Washington

Gardeners' Notes:

0
positives
1
neutral
0
negatives
RatingContent
Neutral

On Jun 24, 2013, keferraro from Crown Point, IN wrote:

As one of the pictures is captioned, this is a sloooow grower. I just moved it this weekend because I thought maybe it was not happy where it was, which was literally in the clay muck at the edge of the pond in full sun. I had to literally dig my fingers under it and extract it from the muck and was surprised to see that it has thick green rhizomes that connected the various tufts of foliage. It is now higher up on the bank in mostly shade. The growth habit of this plant is rather recumbent and so far I have not had any substantial bunches of foliage but rather sparse bunches that sprout along the length of the rhizome. It grows to 8" long and is hardy in zone 5.