These are French Marigolds:
They come in a range of colours, ranging from pale yellow to deep russetty red.
This is a Calendula, grown from seeds kindly sent to me by Mike who writes Flighty's Plot.
This is an Allium which grows in profusion at the base of my Crab Apple tree. I never planted it. It just arrived, and evidently self-propagates easily.
This is a Geranium - "Anne Folkard". I love the contrast between the dark black centres and the mauve petals.
This is a Rose called "Sunset Boulevard", producing its first bud of the year.
I know this is not a flower, but it's colourful anyway!