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Common Horsetail

Equisetum arvense

Care

Sun

part shade

Water

moderate

Soil

Adaptable, tolerant of sand, loam and clay.

Size

0–2ft tall

Bloom

Mar-May

Container

Friendly

Edible

Young fertile shoots boiled and eaten like asparagus; traditionally harvested

Native Range

Widespread throughout California in moist areas, meadows, and wetlands, sea level to 8000 ft elevation.

Care Guide

Planting

Plant Common Horsetail in part shade in a location that stays consistently moist or near water features - this plant thrives in wet habitats and won't tolerate dry conditions. It's adaptable to sand, loam, and clay soils, so soil type is flexible as long as drainage keeps the area wet rather than dry. Spring is the ideal planting time, which aligns with when the plant's fertile stems emerge. Space plants with their rhizomatous spreading habit in mind, as these plants can spread aggressively underground.

After Planting

Water consistently to keep soil moist throughout the growing season and into dormancy; this is not a plant to let dry out between waterings. Expect fertile stems in spring (March–May) followed by taller, bushier sterile stems as the season progresses, reaching up to 2 feet tall. The #1 mistake is planting Common Horsetail in regular garden beds expecting it to behave like other perennials - it's specialized for wet habitats and will either struggle in typical garden moisture or escape its boundaries through underground rhizomes if not contained.

Visit Calscape for more information about Common Horsetail

Endangered & Threatened Species Supported

Trumpeter Swan Cygnus buccinator
CA: Threatened

State threatened species in California

Wildlife Supported

Insects

Larval Host · Year-Round

Larval host plant; larvae skeletonize and consume foliage May-July

Foliage · Year-Round

Specialist feeder on Equisetum; adults and larvae consume plant tissue

Foliage · Year-Round

Sap-feeding; populations peak on new growth during growing season

Mammals

hig Elk
Foliage · Year-Round

Winter and early spring browse; preferred during snow cover when other forage scarce

Foliage · Year-Round

Primary winter browse when other vegetation unavailable; spring shoots consumed when emerging

Foliage · Year-Round

Early spring green shoots consumed during post-hibernation foraging

Foliage · Year-Round

Winter survival food; spring shoots during green-up period

Birds

Foliage · Winter

Winter foraging; opportunistic consumption during food scarcity

Foliage · Year-Round

Aquatic habitats; forages on horsetail in shallow water year-round

mod Mallard
Foliage · Year-Round

Year-round availability in wetland habitats; important early spring food

Foliage · Year-Round

Migration staging areas; spring and fall consumption in wetland habitats

Where to Buy

Native Here Nursery

101 Golf Course Dr, Tilden Regional Park, Berkeley

Sat 10am-2pm

3.0 mi (510) 549-0211 Website