Definition: The word "half-evergreen" is an adjective used to describe a type of plant that does not completely keep its leaves all year round. Instead, it retains its leaves in milder weather (like in warm climates) but loses them in harsher or colder conditions (like in cold climates).
"Half-evergreen" describes plants that retain their leaves in mild weather but lose them in harsher climates. It's useful in discussions about gardening and plant characteristics.