Bees follow players holding flowers. That does not happen for tall flowers, such as sunflowers and rose bushes.
You can breed bees with tall flowers, however.
Bottom half of door is missing when an entity is passing through while placing it
Bees are not attracted to sunflowers in the player's hand
Bees only follow who hand small flowers
bees dont follow you if you hold double tall flowers
Bees are not taking pollen from tall flowers anymore