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Thick Leaf Yerba Santa
Eriodictyon crassifolium

Family: Boraginaceae
Genus: Eriodictyon (er-ee-oh-DIK-tee-on) (Info)
Species: crassifolium (krass-ih-FOH-lee-um) (Info)




4-6 ft. (1.2-1.8 m)


36-48 in. (90-120 cm)

4-6 ft. (1.2-1.8 m)


USDA Zone 6a: to -23.3 C (-10 F)

USDA Zone 6b: to -20.5 C (-5 F)

USDA Zone 7a: to -17.7 C (0 F)

USDA Zone 7b: to -14.9 C (5 F)

USDA Zone 8a: to -12.2 C (10 F)

USDA Zone 8b: to -9.4 C (15 F)

USDA Zone 9a: to -6.6 C (20 F)

USDA Zone 9b: to -3.8 C (25 F)

USDA Zone 10a: to -1.1 C (30 F)

USDA Zone 10b: to 1.7 C (35 F)

Sun Exposure:

Full Sun


Unknown - Tell us

Bloom Color:

White/Near White

Bloom Time:

Unknown - Tell us




Other details:

This plant is attractive to bees, butterflies and/or birds

This plant is resistant to deer

Soil pH requirements:

6.1 to 6.5 (mildly acidic)

6.6 to 7.5 (neutral)

7.6 to 7.8 (mildly alkaline)

Patent Information:

Unknown - Tell us

Propagation Methods:

Unknown - Tell us

Seed Collecting:

Unknown - Tell us


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

North Fork, California

Simi Valley, California

Gardeners' Notes:


On Jul 29, 2010, suewylan from North Fork, CA (Zone 7b) wrote:

Oh my goodness, this grows everywhere on our property and if anyone wants some let me know! It's pretty in the early summer with its lavender flowers and shiny leaves and I have trimmed the flowers off after bloom and almost to the ground to keep it bushy for the next spring. It's evergreen and can look rather rangey if not 'groomed' but when evrything is golden in the late summer, it's nice to have some nice dark green.

On our place, I pretend that it is hedges and cultivate certain areas(by grooming and washing off the dusty leaves) and take out what bothers me. Easily popped out of the ground, but will come back.