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If you've stumbled onto a patch of milk thistle growing in rocky soil, grab your gloves and pruning shears. Once the purple heads have begun to turn white and fluffy, cut them from the stalk. Let the heads dry completely in a paper bag and loosen the seeds. Transfer the seeds to a storage container so the chaff floats away. Then you're ready to use the milk thistle seeds in homeopathic preparations.

Method 1
Method 1 of 2:

Gathering Milk Thistle

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  1. Pay attention to when the flowers start to dry out. In the fall you should begin to see white or silver seeds appear near the tops of the milk thistle. [1]
    • To make it easier to harvest, wait until the milk thistle blossoms are dry.
  2. Since the leaves and spines of the plant are sharp and prickly, wear long sleeves and pants that will protect your skin. Wear thick, sturdy gloves that will keep the prickles from poking you. [2]
    • Keep in mind that milk thistle can still penetrate the gloves if you don't handle the plant carefully.
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  3. Take sharp scissors or pruning shears and cut the head. Leave about 2 in (5 cm) of the stalk so it's easier to hold the milk thistle. [3]
    • Harvest as many milk thistle heads as you like.
  4. To harvest the milk thistle seeds, place all of the heads in a paper bag and put it in a warm place. This will help the seeds dry completely. [4]
    • For example, put the bag of milk thistle heads in your garage or a room in your house that gets lots of sunshine and warmth.
  5. Once the seeds are dry, transfer them to a burlap or rough canvas sack. Shake the bag and push down a little so the seeds loosen from the heads. Then pour the seeds from the sack into a bucket or bowl. [5]
    • You'll see the chaff blow away from the seeds as you pour them into the bucket or storage container.
  6. Transfer the seeds to an airtight storage container and put it in a cool, dry place. Plan on harvesting about 1 tablespoon (5 g) of seeds for each milk thistle head you gathered. [6]
    • If stored properly, you can keep the seeds for up to 1 year.
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Method 2
Method 2 of 2:

Using the Harvested Milk Thistle

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  1. Scoop 1 tablespoon (5 g) of ground milk thistle seeds into a tea bag or filter and put it in a tea pot. Pour 2 cups (470 ml) of boiling water into the pot and let the tea steep for 3 to 5 minutes. Take the tea bag out and sip the tea slowly. [7]
    • To flavor the tea, consider adding lemon or honey.
  2. Measure 5 ounces (147 ml) of alcohol that's at least 100-proof into a glass container. Add 1 ounce (28 g) of harvested milk thistle seeds and screw a lid on the container. Shake the container every day and let the tincture rest for at least 5 to 6 weeks. Strain the tincture before you're ready to use it. [8]
    • Store the tincture for several years in a dark container with a dropper.
    • To take the tincture by mouth, squeeze 1 to 2 drops onto your tongue 2 to 4 times a day.
  3. Place your seeds into a blender or food processor and put the lid on. Pulse the seeds until they're ground into a fine powder. Store the powder in an airtight container for up to 6 months.
    • To use the powder, mix 2 to 3 tablespoons (16 to 24 g) into a smoothie.
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Community Q&A

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  • Question
    Can I use the leaves of the Milk Thistle?
    Chris
    Top Answerer
    Yes, you can use the leaves of this plant to make a milder version of the tea made with seeds. You have to be extra careful when harvesting the leaves, as they are more prickly than the flowers are.
  • Question
    Will the plant reflower after harvesting or do I need to plant new seeds?
    Idabelle
    Community Answer
    You will have to plant more seeds. Milk thistle is an annual plant, so the plant will not flower again next year. However, it is easy to gather seeds from it at the end of its season, which can be replanted for the next growing season.
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      Warnings

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      Things You'll Need

      Gathering Milk Thistle

      • Protective clothing
      • Gardening gloves
      • Scissors or pruning shears
      • Burlap or rough canvas sack
      • Paper bag

      Using the Harvested Milk Thistle

      • Tea bag or filter
      • Tea pot
      • Kettle
      • Measuring cups and spoons
      • Blender or food processor
      • Storage container
      • Dark container with dropper
      • Glass container with lid
      • Strainer

      About This Article

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      Reader Success Stories

      • Ronnie C.

        May 28, 2023

        "I have always uprooted the many weed milk thistles from my pastures to protect the cattle, and tossed them into a ..." more
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