I always like to include the Merriam Webster definition of my word du jour, and today’s word is DECIDUOUS:
1 : falling off or shed seasonally or at a certain stage of development in the life cycle <deciduous leaves> <deciduous scales>
2 a : having deciduous parts <maples, birches, and other deciduous trees> b : having the dominant plants deciduous <a deciduous forest>
3 : ephemeral
— de·cid·u·ous·ness noun
This is easy to use in a sentence:
Deciduous trees lose their leaves in the fall and winter.