How do you grow Thistle from seed?

Sow seeds in early spring after all danger of frost passes in your region. Cultivate a planting site in a sunny, well-draining area when the soil warms to at least 65 degrees Fahrenheit. Water the planting site thoroughly to moisten the soil surface evenly. Sow the seeds singly about 12 inches apart. Click to see full answer. Also to know is, how do you collect thistle seeds?Put the heads in a paper bag and dry them for 5 to 7 days. 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.Beside above, do you deadhead thistles? Reblooming Globe Thistles Plants produce numerous buds for more flowers even as the current flower stalks are in bloom, and removing these flowers, or deadheading, encourages the plant to allow those dormant buds to develop and flower in the same season. Secondly, how do you propagate Thistle? Milk thistle usually propagates through seeds, but you may be able to propagate the plant with a cutting. Snip a healthy 2- to 4-inch stem from the milk thistle before the fall frost. Pull off any lower leaves up to the halfway point of the cutting. How do you take care of a thistle?Plant basal or root cuttings in loosened soil that is moderately acidic for best results. Water the young plants twice per week for a month and then gradually reduce supplemental watering as they establish. Choose a well-drained site in full sun for the best growth, although they will tolerate partial shade.