Acorus gramineus 'Ogon' / P14
Acorus gramineus 'Ogon' / P14
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Acorus gramineus 'Ogon'
Acorus gramineus 'Ogon'
P14 nursery pot
Plant Highlights: Bright golden evergreen foliage • Neat arching habit • Excellent for moist soils and pond edges • Year-round colour • Ideal for containers and borders
Overview
Acorus gramineus 'Ogon', commonly known as Japanese Sweet Flag, is a compact evergreen grass-like perennial prized for its vibrant golden-yellow foliage. Its slender, arching leaves form dense clumps that bring year-round colour and texture to borders, water features and container displays, brightening even lightly shaded areas.
Thriving in consistently moist conditions, 'Ogon' is particularly effective around ponds, streams and bog gardens, while also performing well in borders and decorative containers where the soil does not dry out completely. Its elegant foliage provides a striking contrast to flowering perennials and other foliage plants throughout the seasons.
Why We Love It
- Bright golden foliage provides year-round colour.
- Compact clumps add texture and movement to planting schemes.
- Excellent for pond margins and consistently moist borders.
- Evergreen foliage provides lasting structure.
- Easy to grow and low maintenance.
Plant Details
| Attribute | Information |
|---|---|
| Botanical Name | Acorus gramineus 'Ogon' |
| Common Name | Japanese Sweet Flag |
| Plant Type | Evergreen grass-like perennial |
| Foliage | Narrow, arching golden-yellow evergreen leaves |
| Flowers | Small, inconspicuous flower spikes in late spring to early summer |
| Seasonal Interest | Evergreen foliage provides year-round colour |
| Growth Habit | Compact, clump-forming |
| Position | Full sun or partial shade |
| Soil | Moist, humus-rich soil; suitable for consistently damp locations |
| Mature Height | Approximately 25–35cm |
| Mature Spread | Approximately 30–45cm |
| Hardiness | Hardy throughout Ireland in moist, well-drained to wet soils |
Growing Guide
Position
Grow in full sun or partial shade. Foliage colour is often brightest with a little sunshine, while partial shade is beneficial in warmer locations. Ideal beside ponds, streams or in consistently moist borders.
Watering
Keep the soil consistently moist, particularly during dry weather and while plants establish. Unlike many ornamental grasses, Acorus does not tolerate prolonged dry conditions.
Soil
Plant in fertile, humus-rich soil that remains evenly moist. It thrives in bog gardens and around pond margins and adapts well to containers provided the compost is kept from drying out.
Hardiness and Winter Care
Fully hardy throughout Ireland. Remove any damaged or tired foliage in late winter or early spring before fresh growth emerges. Divide congested clumps every few years to maintain vigour.
Routine Care
Requires very little maintenance. Trim away any dead or weathered leaves in spring and divide mature clumps if they become overcrowded.
Perfect For
- Pond margins and water gardens.
- Bog gardens and damp borders.
- Containers with consistently moist compost.
- Woodland-style planting.
- Adding evergreen colour and texture to mixed borders.
Good to Know
Although often used around water features, Acorus gramineus 'Ogon' is not a true ornamental grass but a grass-like perennial. It performs best where the soil remains consistently moist and should not be allowed to dry out for extended periods.
Product Information
- Botanical name: Acorus gramineus 'Ogon'
- Supplied in a P14 nursery pot.
- Evergreen grass-like perennial.
- Pot size refers to the plant at the time of sale and not its eventual mature size.