Marigold, Calendula officinalis, Side view of one flower with snow piled up on it.

Blueberry, Vaccinium, Stem of bush showing flowers in various stages of opening.

Blueberry, Vaccinium, Stem of bush showing open flowers.

Blueberry, Vaccinium, Stem of bush showing open flowers.

Bluebell, English bluebell, Hyacinthoides non-scripta, Single stem and pale blue flower head shown against a pure white background.

Bluebell, English bluebell, Hyacinthoides non-scripta, Stems and pale blue flower heads shown against a pure white background.

Bluebell, English bluebell, Hyacinthoides non-scripta, Stems and pale blue flower heads shown against a pure white background.

Bluebell, English bluebell, Hyacinthoides non-scripta, Stems and pale blue flower heads shown against a pure white background.

Bluebell, English bluebell, Hyacinthoides non-scripta, 2 stems and pale blue flower heads shown against a pure white background.

Bluebell, English bluebell, Hyacinthoides non-scripta, 2 stems and pale blue flower heads shown against a pure white background.

Bluebell, English bluebell, Hyacinthoides non-scripta, 2 stems and pale blue flower heads shown against a pure white background.

Bluebell, English bluebell, Hyacinthoides non-scripta, 2 stems and pale blue flower heads shown against a pure white background.

Bluebell, English bluebell, Hyacinthoides non-scripta, Stems and pale blue flower heads shown against a pure white background.