Glory bush, Tibouchina urvilleana, purple flower with prominent stamen and buds on an evergreen shrub.

Glory bush, Tibouchina urvilleana, purple flower with prominent stamen on an evergreen shrub.

Iceland poppy, Papaver nudicaule, close-up detail of a single orange flower with yellow stamen against a green leafy background.

Foxglove tree, Paulownia tomentosa, purple flowers on a panicle on a tree in the spring.

Foxglove tree, Paulownia tomentosa, purple flowers on a panicle on a tree in the spring.

Chives, Allium schoenoprasum, purple flowers on long green stems of the garden herb growing in a garden border.

Geranium, red flowers in the foreground of a winding shingle path leading to a gazebo between grass lawn and flowerbed of mixed plant varieties.

English cottage garden, winding shingle path leading to a gazebo between grass lawn and flowerbed of mixed plant varieties.

Chives, Allium schoenoprasum, purple flowers on long green stems of the garden herb growing in a garden border.

Chives, Allium schoenoprasum, purple flowers on long green stems of the garden herb growing in a garden border.

Foxglove tree, Paulownia tomentosa, purple flowers on a panicle on a tree in the spring.

USA, Washington DC, South Portico of the White House with the Stars and Stripes flag flying at half mast.