What are examples of blue-flowering plants?

Answer 1

African blue lily, bigleaf hydrangea, blue Egyptian water lily, blue lupin, blue-eyed iris, chicory, cornflower, mealycup sage and small globe thistleare examples of blue-flowering plants.

Specifically, the African blue lily (Agapanthus praecox) flowers dark blue. Bigleaf hydrangea (H. macrophylla) has blue or pink flowers respectively depending upon whether the soil pH is more (5.2-5.5) or less (6.0-6.2) acidic. Blue Egyptian water lily (Nymphaea caerulea) offers pale bluish white to mauve or sky blue flowers which open between about 9:00 a.m. and 3:00 p.m. daily.

Blue lupin (Lupinus angustifolius) has bluish to pinkish to violet blue flowers. Bue-eyed iris (Aristea ecklonii) offers cheery blue flowers which open only in bright light and which will last only one day. Chicory (Cichorium intybus) produces bright blue flowers even though occasionally it will flower pink or white.

Cornflower (Centaurea cyanus) offers intense blue flowers. Mealycup sage (Salvia farinacea) produces navy blue flowers. Small globe thistle (Echinops ritro) sports flowers which develop from silvery blue into bright blue.