1. Lilacs only flower for about three weeks in the spring.
2. ... but some varieties, like the Josee or the Boomerang, will during the year.
3. Thomas Jefferson loved lilacs — and wrote about them in his gardening book.
4. Some varieties of lilac bushes can survive temperatures down to -60°F.
5. Want a big lilac bush? Prune them less often. (But make sure to trim them at least once a year!)
6. There are more than 1,000 varieties of lilac bushes and trees.
7. Lilacs belong to the olive family, Oleaceae.
8. The flowers are edible. (And great in cocktails, like this !)
9. In the language of flowers, purple lilacs are the symbol of first love.
10. The New Hampshire state flower is the lilac. Live Free or Die indeed.
11. The tree lilac, Syringa reticulata, can grow to 25 feet tall.
12. Want to stop and smell the flowers? Purple lilacs are most fragrant on a sunny, warm day.