Lilacs: Spring's Favorite Perfume
Cut lilacs stay fresh only a few days. For the best bouquets, cut in the early morning. Use a pruner; the branches don't snap off easily. Make crisscross cuts at the bottom of each branch, but don't crush the stem. Having more surface area allows the stem to take up more water.
Immediately plunge the cut ends into a bucket of warm water to condition the stems. In a clean vase, add a floral preservative to warm water. Trim off any leaves that will be underwater. Recut the stem ends while they're underwater in the bucket before arranging. Change the water in the vase daily.