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Broadleaf Weeds - Vacant Lot - Slender Aster

BES-TEX Weed ID Guide · Broadleaf Weeds

Slender Aster

Symphyotrichum tenuifolium

Winter annual Broadleaf

Common Name

Slender Aster

Latin Name

Symphyotrichum tenuifolium

Family

Asteraceae

Life Cycle / Type

Winter annual · Broadleaf

What Is It?

Slender aster is a winter annual broadleaf weed with thin, upright stems, narrow leaves, and small white to pale lavender daisy-like flowers. It often goes unnoticed until flowering and is commonly found in thin turf, disturbed soil, roadsides, and unmanaged areas.

Slender Aster plant
Photo: aggieturf.tamu.edu.

Soil Temperature & Germination

Slender aster germinates as soils cool in the fall.

Below 55°F

Germination begins

Cool winter soils

Continued establishment

Decision Question

Is the slender aster visible above the soil right now?

YES

It is already up.

Post-Emergent Herbicide BMP

NO

It has not emerged.

Pre-Emergent Herbicide BMP

Why This Weed Comes Back

Missed fall pre-emergent timing

Bare or disturbed soil

Thin or stressed turf

Learn the Basics

A healthy, thick lawn is the best defense against weeds.

Lawn Care 101 BMP
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