My gardening friends are invited to weigh in on this, but I’m guessing from observation that lilacs don’t like heat. The lilacs in Sara’s yard have just come into lush bloom, and then we had a couple of 80 degree days — unusual for Seattle at any time of spring or summer. The lilacs, most of them, quickly went from lush to brown. Ouch! I’m glad she was able to take a few cuttings to put in her new home last weekend, when things were still peak.