Anyone able to ID this plant for me, please.
In my back garden border I planted seeds from a box of 'wildflowers' that actually contains a mix of native, non-native, wild and cultivated flowers.
The plant in the centre of the picture has been growing quite slowly in the border, and there are several of them. The leaves have developed in a whorl but it doesn't look as if it will produce a flower.
Anyone know what it is?