United Kingdom 
what is the best position
to grow sissartmc hium striatum I live in South Yorkshire and have a south east facing garden,
17 Oct, 2011
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Do you mean Sisyrinchium striatum, Janet? The tall creamy-yellow flowered plants with Iris-like leaves?
They prefer a sunny position, but will take a little shade. I have large clumps growing in gravel, where they seed themselves. They obviously like it there. :-)
17 Oct, 2011