Since Peranakan culture is closely connected with Chinese lotus flower is particularly favored at the wedding. Even if the newlyweds don't include lotus in their flower arrangements the lotus will most likely be resting on their wedding bed. The main reason is for the healthy and numerous offsprings.
Even more important than that is the symbol of purity which should be for a clean heart before marriage and in life. Lotus is a perfect example with its bud rising out of the mud to bloom. Who doesn't enjoy watching how effortlessly lotus bounces off all drops and dirt. Incredible!