Personally I gave it a Calm nature to make use of it's amazing Sp.Def stat.
I thought of either modest, calm, or sassy. I kno it's sp.def is godly but I want to take advantage of its sp.att too
It all depends on what role Florges is going to play on your team. I have her as a cleric with Wish and Aromatherapy support so I went for Calm nature, but if you want to pack a bit more punch with Florges then go right ahead, and use a modest nature.
In the end it comes down to surviving a bit longer verses dealing more damage. --- 3DS FC:1762-2781-0852 Cheesychum is the coolest guy in the world!!!