The rainy season is also time for Siam Tulip. The blooms come in pink, puple, white, green, yellow, orange-ish or a mix of colors. So inexpensive that I usually have lots and lots of them everywhere in our villa. Here's a field for the pink lot.
Curcuma alismatifolia, - Thai: ปทุมา, pathuma, or ดอกกระเจียว, dok krajiao, is a tropical plant native to Laos, northern Thailand and Cambodia. Despite its name, it is not related to the tulip, but to the various ginger species.