Acorus Ogon


4 in stock

SKU: acorus-ogon Categories: ,
Common Name: Sweet Flag
Size: 2-3 litre
Hardiness: H6
Hardiness Ratings

All ratings refer to the UK growing conditions unless otherwise stated. Minimum temperature ranges (in degrees ˚C) are shown in brackets

  • H1a: under glass all year (>15˚C)
  • H1b: can be grown outside in the summer (10 - 15 ˚C)
  • H1c: can be grown outside in the summer (5 - 10 ˚C)
  • H2: tolerant of low temperatures, but not surviving being frozen (1 to 5 ˚C)
  • H3: hardy in coastal and relatively mild parts of the UK (-5 to 1 ˚C)
  • H4: hardy through most of the UK (-10 to -5 ˚C)
  • H5: hardy in most places throughout the UK even in severe winters (-15 to -10 ˚C)
  • H6: hardy in all of UK and northern Europe (-20 to -15 ˚C)
  • H7: hardy in the severest European continental climates (< -20 ˚C)
Tags: , , , ,

2-3 Litre Pot

  • Position: Full sun
  • Soil: Moist, boggy, poorly drained
  • Growth rate: Moderate
  • Hardiness: H6
  • Eventual height: 0.1-0.5m
  • Eventual spread: 0.1-0.5m

Acorus Ogon, also known as ‘Slender Sweet Flag’, is a beautiful herbaceous perennial plant that is known for its striking golden yellow foliage. This plant is a popular choice for gardens and landscapes because of its unique colour and elegant appearance. The long, slender, and sword-like leaves of the Acorus Ogon are bright yellow with green stripes, which makes it an attractive addition to any garden. This plant thrives in moist, well-drained soil and partial shade and  is perfect for adding a touch of colour to a water garden, pond or stream side planting. It’s also great for mass planting and as a ground cover and is a great choice for gardeners looking to add a touch of elegance and uniqueness to their gardens.

This plant has been used for centuries in traditional medicine and gardening in Japan, China and Korea. Historically, the plant’s dried rhizomes have been used to treat a variety of ailments such as nausea and indigestion. The plant was also traditionally used in gardens as an ornamental plant, and its golden-yellow foliage was valued for its aesthetic appeal. In recent years, Acorus Ogon has been used as an ornamental plant, particularly for its striking foliage and hardiness in a variety of growing conditions. It is also known for its ability to grow well in water gardens and around ponds, making it a popular choice for water-side landscaping.

How to care for your Acorus Ogon

  • Sun and shade: Prefers full sun. However, in hot, dry regions, it’s best to provide some afternoon shade to protect the plant from scorching.
  • Soil: Prefers moist, well-drained soil that is rich in organic matter. It can tolerate wet soil, making it an excellent choice for planting near water features or in boggy areas.
  • Watering: Water the plant regularly, especially during periods of drought. However, be sure not to overwater as this can lead to root rot. Water the plant at the base, rather than from above, to prevent the foliage from getting wet, which can cause fungal diseases.
  • Fertiliser: Does not require heavy fertilisation. A light application of balanced fertiliser in the early Spring should be sufficient to encourage healthy growth and foliage.
  • Mulching: Mulch around the base of the plant to help retain moisture in the soil and suppress weed growth. This will also help to protect the plant from extreme temperatures.
  • Pruning: Trim any damaged or discolored foliage regularly to encourage new growth and maintain the plant’s overall health and appearance. However, avoid cutting back more than one-third of the plant at once, as this can cause stress and reduce vigour.
  • Propagation: Can be propagated by division in the Spring or Autumn. Simply dig up the plant, separate the clumps, and replant in a well-prepared soil.

By following these basic care guidelines, you can help to ensure that your Acorus Ogon remains healthy, vibrant, and glowing year after year.

Additional information


Lets Go Planting


There are no reviews yet.

Be the first to review “Acorus Ogon”

Your email address will not be published. Required fields are marked *