How much sun does Field Sow Thistle need?

Field Sow Thistle grows best in part shade conditions.

When does Field Sow Thistle bloom?

Field Sow Thistle blooms in June, July, August, and September.

What pollinators does Field Sow Thistle attract?

Field Sow Thistle draws bees, beetles, and flies.

Is Field Sow Thistle HOA-friendly?

Field Sow Thistle takes more care to look intentional in a front yard. Consider it for backyard or mid-zone beds rather than the street edge.

Field Sow Thistle

Name: Pollinator Patch
Author: Pollinator Patch

Sonchus arvensis

Last reviewed: August 2026

Toxicity unknown

Field Sow Thistle (Sonchus arvensis) 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 shade

Water

medium

Size

24"–60" H × 12"–24" W

Bloom

Jun, Jul, Aug, Sep

Pollinators

bees, beetles, flies

Native alternatives to Field Sow Thistle

Field Sow Thistle is not native to the United States. These natives fill a similar role in a planting, matched on bloom season, bloom color and mature size.

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Field sow thistle is a tall perennial wildflower that produces bright yellow daisy-like blooms from summer through early fall. This robust plant can reach up to 5 feet tall and spreads moderately, making it better suited for naturalized areas than formal gardens.

In an HOA neighborhood

Field Sow Thistle takes more care to keep looking intentional in a front yard. Maintenance level: high. Consider it for backyard or mid-zone beds rather than the street edge.

Works well in: backyard only.

Commonly considered a weed
Aggressive spreading habit
Informal appearance resembles dandelions

Wildlife value

The yellow flowers attract a variety of pollinators including bees, beetles, and flies throughout the long blooming season. Seeds also provide food for goldfinches and other small birds in fall.

Common questions

How much sun does Field Sow Thistle need?: Field Sow Thistle grows best in part shade conditions.
When does Field Sow Thistle bloom?: Field Sow Thistle blooms in June, July, August, and September.
What pollinators does Field Sow Thistle attract?: Field Sow Thistle draws bees, beetles, and flies.
Is Field Sow Thistle HOA-friendly?: Field Sow Thistle takes more care to look intentional in a front yard. Consider it for backyard or mid-zone beds rather than the street edge.

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.

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