Frida Kahlo
One artist that I found used flowers in their paintings was Frida Hahlo. Most of her paintings were self portraits and after researching further I found the symbol of the flowers in most of her paintings.
"Kahlo would center-part and braid it into a tight bun and accessorize's it with headpieces and flowers usually from her native country. Often wearing flowers and using them in her paintings as a celebration of her national heritage, their symbolism of fertility and fecundity was also pertinent to Kahlo who was unable to have children herself as a result of the accident in her teenage years"
The symbolism of these images shows how powerful flowers can be and yet so simple at the same time. The way the images remain colourful and bright show such a heart touching symbol. The flowers were seen in most of her self portraits to shows that it is part of her and she cannot change the past similar to us being unable to alter Nature itself.
Below is some images of her:
Georgia O'Keeffe
Another painter I found that uses flowers in their paintings is O'Keeffe. She uses close up images of flowers and paints them with beautiful colours and they way she uses texture is quite simple yet pretty at the same time. I feel the way her images are produced links with the way these flowers could be symbols for such big themes like love, death, health and much more.
Below is some of her work: