Not sorrel, Maizie, but periwinkle. Pretty flowers but liable to be invasive.

Thank you Bulbaholic! I just saw them growing in a hedgerow and thought they looked nice.

Then I would suggest that you continue to enjoy looking at them in the hedgerow, Maizie, and don't be tempted to 'bring a bit home'! LOL.

Oh you spoilsport Bulba. A few Periwinkle in a (contained) planter really looks nice.

Also, I suppose sorrel and periwinkles have something in common... They're both found on the beach. ;o)