Its main habitats are species-rich short, dry and infertile calcareous grassland, on both limestone and chalk. Locally the Brecks is its stronghold and it was at Cranwich Camp near Mundford where I caught up with it today. I found it in 3 places including on Cranwich Heath a mile or so away. Also there I saw Small Heath and Common Blue butterflies, Field Mouse-ear, Wild Mignonette, Bladder Campion, Mouse-ear Hawkweed, Nipplewort and Colour-changing Forget-me-not. Birds included Willow Warbler, Yellowhammer, Mistle Thrush and Common Whitethroat.
At a nearby 'Roadside Nature Reserve' I found a very strange pure white Greater Knapweed amongst many of the more normal coloured ones plus aromatic Wild Marjoram.
On the way home, a species-rich roadside near Goose Green caught my attention while driving past and closer inspection revealed some lovely Sainfoin and Cut-leaved Cranes-bill amongst the commoner species.
Greater Knapweed 'var. alba'