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Tall scouring rush

Equisetum praealtum

Last reviewed: November 2026

Tall scouring rush (Equisetum praealtum) is a perennial fern native to AL, AR, AZ, CA and 45 more states.

Watering reminders and freeze alerts for Tall scouring rush, free in the app.

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Tall scouring rush (Equisetum praealtum)
Photo: (c) aarongunnar, some rights reserved (CC BY)

Toxicity unknown

Tall scouring rush (Equisetum praealtum) is not listed by the ASPCA Animal Poison Control Center (opens in new tab) or the other sources we check, so we have no verdict for it either way. Absence from those lists is not a clearance. If your pet shows symptoms after eating any plant, call the ASPCA at (888) 426-4435.

Light

part sun

Water

high

Size

24"–60" H × 24"–48" W

Bloom

N/A

Native to

AL, AR, AZ, CA and 45 more states

Before you buy

Your city may pay you to plant this

Cities and water utilities offer rebates for replacing lawn with native and water-wise plants. We track 464 programs across 44 states, each with a link to the provider and the date we last checked it.

Find rebates in your area

Picture natives in your own yard

Upload a photo of your yard and Patch Vision shows a rendering of it planted with natives for your region, like Tall scouring rush.

An evergreen, rush-like plant with hollow, jointed, ridged stems and no true leaves or flowers. It spreads by rhizomes along streambanks and wetland edges, forming dense colonies that stay green through winter.

Growing Tall scouring rush

Grow Tall scouring rush in part sun and high water. Mature plants reach 24 to 60 inches tall and spread 24 to 48 inches wide.

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Wildlife value

Provides year-round cover along waterways, though it offers little direct food value for pollinators.

Common questions

How much sun does Tall scouring rush need?
Tall scouring rush grows best in part sun conditions.
Where is Tall scouring rush native?
Tall scouring rush (Equisetum praealtum) is native to AL, AR, AZ, CA and 45 more states, per the World Checklist of Vascular Plants (Kew).

Native range data from the World Checklist of Vascular Plants (Kew). Pollinator and host plant associations compiled from GBIF, iNaturalist, and published ecological literature.

If something looks wrong

Common plant problems, and what to check first

These come up on almost any plant. Each guide lists the likely causes in the order they are worth ruling out, with one thing to check before you act on any of them, and links to the source it came from.

See all plant problem guides

Ready to grow Tall scouring rush? Add it to your garden in the Pollinator Patch App to track it and get season-by-season care guidance.