During Wai Khru or Teacher Appreciation Day in Thailand, teachers are presented with flowers. This one on the photo is somewhat improvised, i.e. eggplant flowers are nowhere in this arragement, but the meaning is intact. Supposedly, the eggplant flower, represented by the white, tiny flowers forming lines on the body of this arrangement, stands for respect because when the tree is blooming its branches bend down in the same way a student pays respect to their teacher. Bermuda grass, replaced in this arrangement with the purplish pink flowers, stands for patience or perseverance because it looks very much alive for a long time. The popped rice, represented as the white tips on the pointed banana leaves, stands for discipline because the rice is placed in a pan together and heated up to become popped rice. The needle-like leaves mean the student will be sharp-witted and brainy.
Description revised from http://www.thailandqa.com/forum/showthread.php?t=1618
There! It felt good to let that out. Happy now :-)