General Plant Information (Edit)
Plant Habit: Herb/Forb
Life cycle: Biennial
Sun Requirements: Full Sun to Partial Shade
Water Preferences: Mesic
Dry Mesic
Dry
Minimum cold hardiness: Zone 7a -17.8 °C (0 °F) to -15 °C (5 °F)
Maximum recommended zone: Zone 10b
Plant Height: 2 feet to 6 feet
Plant Spread: 12 inches to 18 inches
Leaves: Variegated
Other: Basal leaves 6 inches to 28 inches in length with spiny margins.
Flowers: Showy
Flower Color: Purple
Bloom Size: 2"-3"
Flower Time: Late winter or early spring
Spring
Late spring or early summer
Summer
Underground structures: Taproot
Uses: Medicinal Herb
Will Naturalize
Edible Parts: Leaves
Roots
Seeds or Nuts
Eating Methods: Raw
Cooked
Wildlife Attractant: Bees
Resistances: Drought tolerant
Salt tolerant
Pollinators: Bees
Miscellaneous: With thorns/spines/prickles/teeth

Image
Common names
  • Milk Thistle
  • Mary's Thistle
  • Mother's Milk
  • Blessed Milk Thistle
Botanical names
  • Accepted: Silybum marianum
  • Synonym: Carduus marianus

Photo Gallery
Location: Slatyfork, WV 7a
Date: 2018-09-02
Location: Slatyfork, WV 7a
Date: 2018-09-02
Location: The Cloisters NY, NY
Date: 2018-06-16
Looks pretty but don't touch!
Location: Toscane
Date: 2017-06-26
Location: Stillingfleet Lodge Garden, Yorkshire UK
Date: 2022-06-29
Location: Toscane
Date: 2017-06-26
Location: Santa Monica Mountains National Recreation Area, California
Date: 2012-03-30

Date: 2016-06-08

Date: 2020-05-06
Flower

Date: 2020-05-06
Location: Sao Laurenco - Madeira
Date: 2023-04-12
Location: Stillingfleet Lodge Garden, Yorkshire UK
Date: 2022-06-29
Location: All pictures taken in/on my gardens/greenhouse/property
Date: 2021-08-17

Date: 2020-11-13
Uploaded by tarev

Date: 2022-04-29
Location: Sao Laurenco - Madeira
Date: 2023-04-12
Location: Toscane
Date: 2017-06-26
Location: Sao Laurenco - Madeira
Date: 2023-04-12

Courtesy Outsidepride
  • Uploaded by Joy

Date: 2016-03-24
Location: Tellys Greenhouse, Troy, MI
Date: 2010-05-10

Courtesy Seeds of Victoria
  • Uploaded by vic

Date: 2020-05-06
Immature flower bud
Location: Sao Laurenco - Madeira
Date: 2023-04-12
Location: Potohar, Pakistan.
Date: 2013-03-15
Location: Sao Laurenco - Madeira
Date: 2023-04-12

photo credit: H. Zell

photo credit: H. Zell
Location: Santa Monica Mountains National Recreation Area, California
Date: 2010-05-07
Location: Malibu Creek State Park, Calabasas, California
Date: 2010-10-22
Location: Upper Las Virgenes Open Space Preserve, California
Date: 2013-07-31
Seed head after the seeds have fallen away
Location: Malibu Creek State Park, Calabasas, California
Date: 2013-01-18
Location: Tellys Greenhouse, Troy, MI
Date: 2010-05-10
Location: Tellys Greenhouse, Troy, MI
Date: 2010-05-10

Date: 2020-11-13
Uploaded by tarev

 Photo Courtesy of Baker Creek Heirloom Seeds. Used with permissi
  • Uploaded by Joy
Location: All pictures taken in/on my gardens/greenhouse/property
Date: 2018-03-29
Location: Potohar, Pakistan.
Date: 2013-03-15

photo credit: H. Zell

Photo courtesy of Annie's Annuals and Perennials
  • Uploaded by Joy
Location: Klatovy District, Czech Republic
Date: 2010-08-12
Photo courtesy of: Chmee2
Location: Nashua, New Hampshire (zone 5b)
Date: 2011
Near the Merrimack River in Nashua, New Hampshire.
Comments:
  • Posted by wildflowers (North East Texas - Zone 7b) on Feb 3, 2015 5:38 PM concerning plant:
    Blessed milk thistle is an important medicinal herb that is used to regenerate damaged liver cells and is used for cirrhosis, hepatitis, jaundice, and poisoning by drugs or alcohol. It's the only known antidote to the deadly death-cap toadstool (Amanita phalloides). The young leaves can be cooked or eaten raw in salads.
  • Posted by CraftyFox (Fox Valley, North America - Zone 5a) on Aug 3, 2021 5:39 PM concerning plant:
    Is this plant really a biennial? I planted one from seed late spring and it is now blooming in late summer..

« Add a new plant to the database

« The Plants Database Front Page

Today's site banner is by adknative and is called "Baby Blue Eyes"

This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.