Buds are embryonic. I love the way that Biology uses the same terminology for both flora and fauna.
Buds are embryonic, undeveloped shoots from which leaves, stems and flowers arise.
Scales are a protective layer keeping woody plant buds dormant and safe through cold winters.
Some plants break out leaves first, then flowers follow. This is called Synanthous. Other plants flower first and then their leaves break out. And some just have one huge bud.
Synanthous plants are the most common. After all they need photosynthesis and respiration almost immediately.
Hysteranthos are less common. These include Redbud, Witch Hazel, Forsythia, Magnolia, Cherry Blossom, Paper Bush, and various bulbs like Colchicum, Crocus, and Amaryllis
Mixed Buds include maples, apples, and cherries
about buds