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Acorus gramineus Ogon

Sweet Flag

Decorative clumps of yellow and green striped leaves

A compact variety with colourful variegated green and golden-yellow leaves. It eventually makes a low growing clump, with the leaves forming attractive wide fans. It produces flower spikes between June and July.


A low maintenance grass that loves to grow in full sun and in boggy damp spots so good for planting by ponds and wet areas.


Grows best in moist, fertile soils.

Plant details

In depth plant information

Property Value
Plant type Grass
Foliage colour
Typically available April - September
Season of interest Spring
Evergreen Yes
Plant height 10 cm - 50 cm
Plant width 10 cm - 50 cm
Fragrant flowers No
Attracts bees No
Attracts butterflies No
Plant height in 5 years 30 cm
Hardiness zone (?) H4

Will perform best in these conditions

Property Value
Soil type Clay, Chalk, Loam
Light exposure Full sun
Soil drainage Moist
Planting instructions

Water the plant in its pot thoroughly before planting – give it a good soaking. Prepare the area by digging a hole twice the size of the pot. Dig compost into the base of the hole. Remove the pot and position the plant in the hole, with the top of the rootball about level with the surrounding soil. Refill the planting hole with a mixture of garden soil and compost, firming as you go. Water in well and keep well watered during the plant's first year.

Planting site Cottage garden, Informal garden

Typically available

From April to September