Milk Thistle Seedlings (Silybum marianum) – 9cm Pot

BUY 5 FOR €15

Grow one of the most well-known traditional medicinal herbs in your own garden with this young Milk Thistle plant, supplied in a 9 cm pot and ready to be planted in your garden or transferred into a large container.

Milk Thistle has distinctive green spiny leaves marbled with white veins and purple flowers that bloom in summer. Milk Thistle has been widely used to support liver health and natural detoxification, thanks to its naturally occurring compound silymarin.

This hardy plant is low-maintenance and easy to grow, making it ideal for both beginner gardeners and experienced growers. Once established, Milk Thistle grows into an impressive architectural plant that can reach up to 1–1.5 metres tall and produces seeds that are commonly harvested for herbal preparations.

It also provides an excellent nectar source for bees and pollinators, making it a valuable addition to wildlife-friendly gardens.

Whether you're planting a herb garden, permaculture plot, or simply want to get to know Milk thistle, it is a beneficial and rewarding plant to grow.

If you are growing to harvest seeds at the end of season we recommend growing 3 to 5 plants at least for a good amount of seeds, 

Plant Details

Botanical Name: Silybum marianum
Common Name: Milk Thistle
Pot Size: 9 cm
Plant Type: Hardy annual
Height at maturity: 1 – 1.5 m
Position: Full sun
Soil: Well-drained soil, dry soil.
Flowering: July-August
Wildlife Friendly: Attracts bees and pollinators
Origin: Grown from seed in Ireland. Germinated without artificial heat or light to ensure the plant thrives when transplanted. Seedlings grow in organic compost.

Growing Guide

Planting

Plant Milk Thistle in full sun in well-drained soil. It can be grown in herb beds, borders, wildlife gardens, or larger containers.

Care

Milk Thistle is a hardy and drought-tolerant plant once established. Water regularly during the early growth stage but avoid overly wet soil.

Harvesting

Seeds are typically harvested in late summer when the flower heads dry. The seeds are the most commonly used part in herbal preparations. Seeds can be finely ground using a coffee grinder to produce a powder, which may then be infused into olive oil. As silymarin is highly fat-soluble and poorly soluble in water, preparing it as a tea would provide limited benefit.

Garden Tip

Allowing a few plants to flower provides valuable nectar for pollinators, while collecting seeds ensures you can continue growing Milk Thistle year after year.