Groundcover & Vines – Clumping – Japanese Sweet Flag

Japanese Sweet Flag 

Botanical name: acorus gramineus ‘ogon’ 

Beginner friendly?: moderate 

Average size at maturity: about 1 ft in height and in spread 

Hardy zone: zones 5-9

Foliage color: green/yellow

Flower color: spring, summer 

Bloom time: green, yellow 

Growth rate: reaches fully mature size in 1-2 growing seasons 

Pruning instructions: cut down to about 3-6 inches above the ground in the early spring, before new growth begins to emerge 

Propagation methods: propagate by division during the spring or fall months 

Landscape use: groundcover, edging, borders, container plant 

Special features: deer resistant, fragrant 

Light needs: 4-6 hours of sun per day 

Watering instructions: allow the top 1-2 inches of soil to dry between watering sessions 

Fertilizing instructions : use a slow-release, balanced fertilizer once a year in the early spring 

Best time to plant: spring, fall

Best type of soil: adaptable to most types of soil 

Companion plants: mondo grass, irises, ajuga, lungwort 

Toxicity level: non-toxic for pets and humans 

Invasive species: no