species 1,940 observations

Grassleaf Sweet-Flag

Acorus gramineus

Field notes

Acorus gramineus, commonly known as Japanese sweet flag, Japanese rush, grassy-leaved sweet flag, and grass-leaf sweet flag, is a botanical species belonging to the genus Acorus, native to Japan, Korea, and eastern Asia. The plant usually grows in wetlands and shallow water.

The genome of A. gramineus has been published by independent research groups in 2022 and 2023.

Range

United States

Greener is more native, amber more introduced; paler is less certain. How this was decided

Key traits

Layer: Ground covers
Light: Full sun Part shade
Moisture: Wet
Soil: Sand Loam Clay
Soil pH: Acid Neutral
Resists: Erosion Wet soil
Habit: Arching Dense Erect
Plant type: Ground cover Herbaceous perennial

From NC State Extension.