Silybum marianum (Milk Thistle) [15 Seeds]

$3.95

Germination Information: Milk thistle grows most happily from seeds sown directly in the garden in early spring or late summer, but you could also start it in pots and transplant the seedlings while they are still small (2 to 4 true leaves). Barely cover the seeds with soil and keep them evenly moist. When the seedlings are a few inches tall, thin them to at least 2 feet apart. Keep in mind that each plant can get eventually get 3 or more feet wide.

 

 

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Description

Fantastic as a short-term foliage accent in a big bed, border, or herb garden, milk thistle (Silybum marianum) forms big, bold rosettes of spiny leaves with silvery white veining in its first year. In the second summer, each rosette sends up 3- to 6-foot-tall stems topped with spiny heads of pinkish purple flowers. It is likely to self-sow if you don’t remove the flowers before they form seed. (The flowers aren’t that great, so you may just want to dig out the foliage rosette at the end of the first season unless you really want to harvest the seeds.) Be aware that this species is considered invasive in some parts of the country. Please check its status in your area before buying the seeds: Invasive Plants Atlas map for Silybum marianum.

Full sun. Biennial; Zones 5 to 10.

Collected in 2019 for the 2020 growing season. At least 15 seeds.

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