The Flower field biome is a rare, colorful biome. The surface is entirely covered with grass blocks, and a red, orange, white, or pink tulip on almost every single block. No other flora can be found here.
The Flower field has no trees at all, so it isn't really a good biome for a first day. Pigs and Sheep spawn here though, providing meat and wool for beds. If you get saplings and plant them in the Flower Field, you can survive. But be careful, since there's no coverage from hostile mobs that spawn at night.