Sweet Flag, Sweet Myrtle, Sweet Rush

Latin Name: Acorus calamus

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(31 Ratings)

Plant Type: Perennial
Description: There is a white-striped form as well as the plain green iris-like species with leaves about 3 ft.(90cm) tall.
Origin: Japan
Environment: Suitable for the home or a greenhouse
Foliage: No
Flowering: No
Season:
Fragrant: No
Growing Ease: Requires a little extra care
Temperature: 50-75°F, 10-24°C
Humidity: Medium humidity
Lighting Needs: Does best in bright indirect sunlight coming from the South/West
Soil Type: A GOOD general purpose potting soil (a soil that retains water yet drains well) will suffice. Check purchased soil to see that it is well aerated and add sand or perlite and peat moss if it seems to pack too tightly. Give the plants a chance to settle in before going back to whatever fertilization program has been successful for you. If you want to mix your own take: 1 part garden soil, 1 part coarse sand or perlite, 1 part moist peat or humus (leaf mold) and a light dusting of lime. Always use a pot with a hole.
Watering: Keep the soil moist at all times and if you use rainwater, be careful as it could be acidic. Use warm water.
Fertilizer: Feed once a year in the spring with a water soluble fertilizer.
Plant Pests: Prone to spider mites. Always inspect any new plant for pests before introducing it to your home or greenhouse.
Propagation: Division of rhizomes in the spring. After dividing the rhizomes plant them in their regular potting mix.
Gardening Tips & Care: Requires good ventilation and should be kept in a cool location. Mist occasionally with warm water (lime free to avoid leaf staining) and ensure the soil is always moist. If possible put outside for the summer on a sun porch or under a tree in light shade.
Is Genus: No
Sweet Flag, Sweet Myrtle, Sweet Rush picture Sweet Flag, Sweet Myrtle, Sweet Rush, Acorus calamus

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