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Threadleaf arrowhead

Sagittaria filiformis

Threadleaf arrowhead
Photo: tas56, CC BY-SA 4.0

Threadleaf arrowhead is a perennial aquatic plant native to the eastern United States, growing in streams, marshes and swamps. It thrives with its roots in saturated soil or shallow water, and its leaves can be thread-like underwater or broad and floating.

Family
Alismataceae (Alismat family)
Grows as
Aquatic, Perennial
Light
Full sun, Part shade
Water
Keep roots submerged in shallow water or constantly wet mud.
Soil
Muddy or silty substrate, or loamy soil kept saturated.
Temperature
Hardy in temperate climates; protect from freezing solid if grown in containers.
How easy
Easy
Native range
E. U.S.A.
Climate
temperate

About

Sagittaria filiformis, the threadleaf arrowhead, is a perennial aquatic plant growing up to 170 centimetres (67 inches) tall. Some leaves are thread-like, entirely underwater, but others are narrowly ovate or lanceolate and floating on the surface.

The species is native to the eastern United States, from Maine south to Florida and Alabama. It occurs in flowing streams in the northern part of its range, but more stagnant waters such as marshes and swamps in the South.

Other Sagittaria plants

Kansas arrowhead · Longbeak arrowhead · Shortbeak arrowhead · Crested arrowhead · Arumleaf arrowhead · Chihuahuan arrowhead · Engelmann's arrowhead · Bunched arrowhead · Grassy arrowhead · Quillwort arrowhead · Springtape · Bulltongue arrowhead

Text excerpted from the Wikipedia article Sagittaria filiformis by its contributors, under CC BY-SA 4.0; the excerpts and the care summary drawn from them are shared under the same licence.

The care summary was written by AI (Claude, Anthropic) from the sources on this page, with general growing knowledge where they are silent. Check before relying on it.

Life form, climate and native range: World Checklist of Vascular Plants, Royal Botanic Gardens, Kew (CC BY 3.0), reformatted; see Plants of the World Online.

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