Poppy flowers are much more common in the "Flower forest" biome, to the point that no other flowers grow anymore (except for two-block flowers).

When traveling in the "flower forest", I realized that the biome almost became a "poppy flower forest", because poppy flowers are much more common, meaning that other flowers don't spawn, which doesn't make sense, this just doesn't apply to flowers two blocks tall. Even using bone meal, poppies are the only flowers that grow, and this is bad especially for people who want to get all the flowers easily, and when they go to this biome, they will find only poppies.