A. Pink Rose
B. Opium Poppy
C. Maltese Centaury
D. Dahlia
Submitted by: Rashid Mehmood
The dahlia was declared the national flower of Mexico in 1963. The tubers were grown as a food crop by the Aztecs, but this use largely died out after the Spanish Conquest. Attempts to introduce the tubers as a food crop in Europe were unsuccessful.