Photo by Melody

PlantFiles: Spotted Phacelia, Fern-Leaved Phacelia, Scorpion Weed
Phacelia bipinnatifida

Family: Boraginaceae
Genus: Phacelia (fa-SEE-lee-uh) (Info)
Species: bipinnatifida (by-pin-uh-TIFF-ih-duh) (Info)

Synonym:Phacelia brevistylis
Synonym:Phacelia endiplus
Synonym:Phacelia simplex

3 members have or want this plant for trade.


12-18 in. (30-45 cm)

18-24 in. (45-60 cm)

USDA Zone 3a: to -39.9 C (-40 F)

Sun Exposure:
Partial to Full Shade

Handling plant may cause skin irritation or allergic reaction

Bloom Color:

Bloom Time:
Late Spring/Early Summer
Mid Summer
Late Summer/Early Fall

Unknown - Tell us

Other details:
Requires consistently moist soil; do not let dry out between waterings

Soil pH requirements:
Unknown - Tell us

Patent Information:
Unknown - Tell us

Propagation Methods:
From seed; direct sow outdoors in fall

Seed Collecting:
Unknown - Tell us

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By SiberianIris
Thumbnail #1 of Phacelia bipinnatifida by SiberianIris

By poppysue
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By whitehorserayne
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No positives
1 neutral
1 negative

Gardeners' Notes:

Negative lindyoh On Jun 24, 2004, lindyoh from Alta Loma, CA wrote:

A pretty weed, but a weed nonetheless. I spent an entire day pulling scorpion weed from my Lake Havasu City, AZ front yard. The next day, my hands swelled up like balloons and every place weed touched skin, I was red and itchy. (Yeah, I was wearing shorts .'s HOT in Lake Havasu!)

Doctor said it was the worst case of contact dermatitis he'd ever seen.

Beware . . .

Neutral Terry On Aug 13, 2001, Terry from Murfreesboro, TN (Zone 7a) wrote:

This easy-to-grow wildflower is pretty in bloom and out. It reseeds, and can move itself around a bit, but wayward seedlings can be moved to a new location easily.

Since it is a biennial, maintain a patch to ensure blooms each spring.


This plant has been said to grow in the following regions:

Westpoint, Tennessee

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