During the winter, lilacs are in their dormant stage. Young lilac bushes may need to be covered during winter for the first two to three years after being planted. Beyond that, they do not need to be covered and can withstand colder weather more easily.
About this Author
Susan Steele has been writing for more than 20 years. Her work has been featured in online publications, such as eHow.com and StarReviews. While attending Ashland Community and Technical College, Steele says her favorite courses were English and literature. Steele has enjoyed working for Demand Studios since June 2009.