Yes the leaves of iris look like green sword blades.
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The plant with sword-like leaves starting with the letter "i" is Iris. It is a flowering plant that belongs to the Iridaceae family and is known for its striking sword-shaped foliage.
Neomarica gracilis or walking iris has sword like leaves.
Gladiola
Iris are plants with sword-shaped leaves and erect stalks bearing bright-colored flowers composed of three petals and three drooping sepals.
It depends upon the particular iris [Irisspp] as to whether the plant will be affected by broadleaved or narrow leaved herbicide applications. Generally, those iris plants such as the amur iris [Iris maackii], Douglas iris [Iris douglasiana], and Virginia iris [Iris virginica] that are water feature and water body lovers tend to be broadleaved. Additionally, the bulbous iris that's grown from bulbs has wider, cylindrical leaves at their bases whereas rhizomatous iris that spreads by underground rhizomes has narrower, sword shaped leaves. Examples of popular narrow leaved iris plants include Algerian iris [Iris unguicularis varangustifolia], Pacific Coast iris [Iris tenax], and Siberian iris [Iris siberica ].
IXIA
ENSATE means having sword-shaped leaves.
No, it is a spiky cactus type plant with sword shaped leaves that grow in a ground-hugging cluster.
Gladioli is the Latin word for small swords. It is applied to the flower gladiolus because of it sword shaped leaves.
An iris is herbaceous. It does not lose its leaves.
It sounds like you are describing the yellow flag iris (Iris pseudacorus). This plant has sword-like leaves that resemble lily blades and produces small yellow iris-like flowers. Yellow flag iris is commonly found near bodies of water like ponds, streams, and marshes.