Herbs Milk Thistle

Milk Thistle
Organic Herb Seed

Product ID: 890

Increasingly popular medicinal herb.

Large plant with shiny, spined leaves mottled with white. Outstanding, solitary, 2" purple flowers. All parts are edible. Medicinal: The active component, silymarin, is found in the seeds and is known for its liver rebuilding properties. NOTE: Cannot ship to WA, OR, or TX. USDA Certified Organic. Avg. 1,200 seeds/oz. Packet: 50 seeds.


Item cannot be ordered at this time. Estimated availability Dec 15, 2022

1 Ounce

Item cannot be ordered at this time. Estimated availability Dec 15, 2022

1/4 Pound

Item cannot be ordered at this time. Estimated availability Dec 15, 2022
Add to Wishlist
  • This product does not ship to the following states: WA,  OR,  TX.

SOWING: Direct seed (recommended): Sow seeds in early spring or late fall, about 4 seeds per foot. Seed requires light to germinate, so cover very lightly with soil. The final spacing for the plants should be 24-36" in rows 3' apart as they grow quickly to a large size. Milk thistle is prickly, so it is recommended to wear gloves when thinning or hand-weeding.


Milk thistle is very adaptable to growing conditions, provided the soil is well-drained.




HARVEST: Young plants can be picked for salads or steaming, but the spines need to be removed. The seeds are harvested in the fall from the drying flower heads on the plant.

SCIENTIFIC NAME: Silybum marianum

Johnny's is committed to your success, every step of the way.

We want you, our customer, to be 100% satisfied with all of our seeds, tools, and supplies. 

If anything you purchase from us proves unsatisfactory, we will either replace the item or refund the purchase price.

Quick Facts

Latin Name

Silybum marianum

Days To Maturity

Average number of days from seeding date to harvest, within a specific crop group. If a transplanted crop: average number of days from transplant date. Not sure if crop is direct-seeded or transplanted? Check the Growing Information box for details. If crop can be both direct-seeded or transplanted, days to maturity refers to direct seeding. Days to maturity for all flowers and herbs is calculated from seeding date.

100 - 125 Days

Life Cycle

Plants can be Annuals (single growing season), Perennials (grow year after year), Tender Perennials (grow year after year in warmer climates; and in some cases when given special protection in colder climates), or Biennials (require two years to mature).


Hybrid Status

Hybrid: The offspring of a cross between two or more distinct parent lines, usually of same species, and selected for improved traits.
Open-pollinated: A non-hybrid variety that can reproduce itself in kind, demonstrating relatively stable traits from one generation to the next.

Open Pollinated

Product Features

Organic Seeds, Plants, and Supplies Organic Seeds, Plants, and Supplies
Plants, or seeds harvested from plants, that have been grown without synthetic fertilizers or pesticides, strictly adhering to the USDA's National Organic Standards Board (NOSB) organic gardening practices are designated as Organic.

Supplies that meet the USDA's National Organic Program (NOP) rules according to a third-party authority such as OMRI, WSDA, and/or a local authority such as MOFGA or NOFA.

Organic Seeds, Plants, and Supplies