Cotton / Scotch Thistle

Thu, Apr 10, 2008


Cotton / Scotch Thistle - Onopodum acanthium
Latin name:
Onopodum acanthium

Description: The statuesque proportions of this plant are a sight to behold. The stems of this native Scotch thistle are clothed in very spiny greyish silver foliage above which, large pale-purple or occasionally white, thistle-like flower-heads appear in July and August. It is best planted at the back of a border as it can reach around 3m. Although a biennial, it self-seeds freely and so plants appear each year after year, you just weed out the ones you don’t want. The ripening seed-heads act as a magnet for goldfinches and other seed eating birds.

Hardiness: Hardy

Height: 2-3m

Position: Full sun

Soil: fertile, well-drained, slightly acidic soil

Water: fairly drought tolerant once established

Usage: Best planted at the back of a border or growing sporadically through gravelled areas

This post was written by:

- who has written 869 posts on My Climate Change Garden.

I am not an experienced gardener - more of an enthusiastic amateur who learns by trial and error and is keen to "manage" the effects of the weather on my garden. Writing this blog is my passion and I hope that it will continue to grow, allowing global gardeners to communicate about the effects of climate change on our plants and the future of our gardens.

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