Japanese sweet flag 'Ogon'

Acorus gramineus 'Ogon' | Also known as: Japanese rush 'Ogon' | Rating: 3 votes | Print / Pdf

Acorus gramineus, or Japanese Rush is native to Japan and East Asia and loves a wet environment. It has shiny, curved and narrow leaves that are a greeny yellow colour and fragrant, growing to around a foot in length. It does have small yellow flowers, but they only bloom when the plant is in plenty of water. It's also suitable for growing in an aquarium as long as the aquarium has an open top so it can grow up and out of the water. It will grow in sun or light shade, a low maintenance plant.

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Plant
Known dangers?
  • no
Height [m]
  • 0.25
Spread [m]
  • 0.1 - 0.15
Dominant flower colour
  • Inconspicuous or absent
Flower Fragrance
  • No, neutral please
Flowering seasons
  • Mid summer
Foliage in spring
  • Variegated
Foliage in summer
  • Variegated
Foliage in Autumn
  • Variegated
Foliage in winter
  • Variegated
Propagation methods
  • division
Growth habit
  • Clump-forming
Environment
Acidity
  • Acidic
  • Neutral
  • Alkaline
Hardiness zone
  • Z10-11
Heat zone
  • H12-2
Winter temperatures [°C]
  • -1 - 4
Heat days
  • 1 - 210
Moisture
  • well-drained but frequently watered
  • poorly-drained
  • boggy
Soil type
  • Clay
  • chalky
  • loams
Sun requirements
  • Full sun
Exposure
  • Sheltered
Usage
Standard category
  • Aquatic & semiaquatic plants
  • Semiaquatic plants
Grown for
  • Ornamental Foliage
Creative category
  • For Beginners
  • Pond plants
Garden type
  • Bog garden
  • Cottage garden
  • Pond
Gardening expertise
  • beginner
Time to reach full size
  • 2 to 5 years
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Acorus gramineus Ogon

Japanese sweet flag

PLANTS Acorus gramineus

Acorus gramineus, or Japanese Rush is native to Japan and East Asia and loves a wet environment. It has shiny, curved and narrow leaves that are a greeny yellow colour and fragrant, growing to around a foot in length. It does have small yellow flowers, but they only bloom when the plant is in plenty of water. It's also suitable for growing in an aquarium as long as the aquarium has an open top so it can grow up and out of the water. It will grow in sun or light shade, a low maintenance plant.