Lilac trees come in multiple sizes, from dwarf varieties to medium-sized trees, but it’s unlikely you’ll spot a lilac tree more than 30 feet tall. The sizes of our most popular lilac trees include:
Ivory Silk Japanese Lilac Tree: 20-25 feet tall and 15-20 feet wide
Miss Kim Lilac Tree:  6-8 feet tall and 6-8 feet wide
Bloomerang Lilac Tree: 6-7 feet tall and 4-5 feet wide
Dwarf Korean Lilac Tree:  5-7 feet tall and 5-7 feet wide