Pink, Carthusian pink, Dianthus carthusianorum, Close view of several flowers showing the toothed edges to the pink petals.

Pink, Carthusian pink, Dianthus carthusianorum, Close view of several flower stems against a pale grey background.

Tickseed, Whorled tickseed, Coreopsis verticillata 'Zagreb', Close view of a single flower in focus against others soft focus behind.

Clematis, Clematis 'Ville de Lyon', Front view of a few purple flowers fully open showing the protruding stamen.

Clematis, Clematis 'Tie dye', a bud with purple flower with a distinctive white splash running through each petal.

Clematis, Clematis 'Marmori', Large, pale pink to lilac-pink flowers, darker pink at the base of the petals, and prominent maroon stamens dusted with pollen.

Clematis, Clematis 'Margaret Hunt', Close side view of a single lavender mauve flower with prominent maroon stamen.

Clematis, Clematis 'Margaret Hunt', Close side view of a single lavender mauve flower with prominent maroon stamen.

Clematis, Clematis 'Margaret Hunt', Close side view of a single lavender mauve flower with prominent maroon stamen.

Yarrow, Achillea 'Coronation Gold', Several flat yellow flower heads viewed from beneath showing the tree like structure against a blue sky.

Yarrow, Achillea 'Coronation Gold', Several flat yellow flower heads viewed from beneath showing the tree like structure against a blue sky.

Yucca, Yucca aloifolia 'Vittorio Emanuele II', Close up of the white flowers.