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Today I’m posting more photos of flowers that I’ve only ever seen at Fullers Mill. (There are lots of plants that I’ve seen for the first time there.) This plant is Galactites tomentosus, also known as purple milk thistle. The ‘purple’ in the common name is essential to avoid confusion with Silybum marianum, the plant more usually known by the name ‘milk thistle’.
Galactites tomentosus is an annual or biennial, depending on the growing conditions. It grows wild around the Mediterranean and, as you would expect, prefers sun and well-drained soil. Grown for the look of both its flowers and leaves, the seeds of this attractive thistle and a very striking white form (‘Alba’) are easily available online.
Like Silybum marianum, this thistle has green leaves that are strongly marked with white, giving it its common name. Last October I photographed the basal rosette of leaves of a young plant. These leaves persist through the winter, adding interest to gardens at a quiet time. (Although I have seen varying statements of its hardiness, some suggesting that it is fully hardy, and others saying that the leaves may die back in a severe winter.) The very prickly young plants that I saw last autumn will be amongst those that are in flower now.

It’s not just the leaves that are prickly; the photo below shows the spines on the buds and the outer bracts that surround the flowers. What a contrast to the soft appearance of the pinky-purple flowers and the downy fluff of the seeds! The plant adds a touch of drama to a border…but I’d reckon on even more drama if a gardener happens to get spiked on it while weeding nearby. Ouch!
That slight risk will be worth it for wildlife gardeners though. When I photographed it, I noticed that the flowers were very busy with bumblebees. Galactites attracts other pollinators too, including hoverflies, butterflies and moths. Later in the year, the seeds are eaten by goldfinches. It’s not just pretty, or prickly, but very useful too.





















