Can anyone suggest a nice flowering plant for the back of an herbaceous border? One that will stay upright, the bees like and is either white, yellow or blue.
or any other solidago. They're easy to grow, no need to water but do need dead heading at this time of year as they die back grey. If you just take the grey heads off they usually flower again on the lower part of the stem.
I can't say I've really noticed bee attention, tilly - my bees (such as they have been this year) have made for the other flowers in the garden - and there are only a few lone bees around at the moment, while they are in flower. Someone's been pollinating them, though! (They are pink however, not in your original colour pallette!)
Oh yes, the lavender is a big attraction - I don't have Michaelmas daisies, all that's bringing them to the back garden at the moment is the (many) nasturiums!