The winter is finally over, and it's time to get back into warm climate. The finest representation of spring that you will find in Minecraft is a flower forest biome. Everytime you see one it's practically exploding with color.
But unfortunately, finding one may be hard, since it usually covers a very tiny piece of land. You should just check out slides 19-21 of this top Minecraft 1.11.2 seeds selection for three of the most beautiful flower biomes.
And, if you're using the latest snapshot, then you can start crafting colorful glazed terracotta blocks that are perfect for this time of the year.