TreeIssues

Devil weed

MODERATE

Sargassum horneri

Overview

Devil weed observed in the wild. Research-grade iNaturalist observation.

Type
Other
Severity
MODERATE
Source
iNaturalist

Symptoms

Geographic Spread

Treatments

Consult Extension Service

Cultural PracticeEffectiveness: MODERATE

Contact your local cooperative extension service for diagnosis and site-specific treatment recommendations. Accurate identification is essential before treatment.

Recommended Products & Tools

Helpful supplies for managing Devil weed. Always read and follow label directions, and confirm a diagnosis before treating.

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Frequently Asked Questions

What is Devil weed?

Devil weed observed in the wild. Research-grade iNaturalist observation.

What are the symptoms of Devil weed?

Where is Devil weed currently found?

Devil weed is currently active in California. It has been reported in 1 total state across the United States.

How do I treat Devil weed?

Treatment options for Devil weed include: Consult Extension Service. Treatment approaches may include chemical, biological, cultural, and mechanical methods depending on the severity and context.

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