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Uses For Sweet Flag Plants – Learn When And How To Harvest Sweet Flag

Sweet flaghttps://www.gardeningknowhow.com/ornamental/water-plants/sweet-flag-grass/growing-sweet-flag-grass.htm, also known as calamus, is an interesting, reed-like plant that has been used for centuries for its fragrant and medicinal properties. While you can use the leaves in teas or simply bruised for their scent, the most popular part of the plant is the rhizome, the root-like tuber that grows underground. Keep reading to learn more about how to harvest sweet flag and common uses for sweet flag plants.

Uses for Sweet Flag Plants

The most commonly used part of the sweet flag plant is its rhizome, which can be used to repel insects, scent a room, or give you something tasty and interesting to chew on. The flavor is usually described as spicy and strong, similar to ginger [1] or cinnamon, with a bitter aftertaste. The leaves, too, can be bruised and hung around the room for their pleasant scent.

When and How to Harvest Sweet Flag

The best time for harvesting sweet flag is in spring before the new growth starts, or in autumn before the first frost.

Sweet flag likes to grow in very wet conditions, like ditches or the shallow parts of streams. This means that harvesting sweet flag is bound to be at least a little messy. In order to get to the rhizomes, dig down at least a foot under the plant.

You should be able to pull a big rooty mass out of the ground. This mass is likely to be very muddy. Remove the leaves and wash the roots.

The rhizomes are about 0.75 inches in diameter and covered in smaller little rootlets that can be removed. Don’t peel the rhizomes – most of the oils are found near the surface.

Sweet flag rhizomes are best stored sliced and dried.


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[1] ginger: https://www.gardeningknowhow.com/edible/herbs/ginger/growing-ginger.htm

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