A mounding base with scallop-shaped green leaves supports a spray of beautiful yellow blossoms from midsummer to early fall Lady's mantle dominates an area and smothers weeds and grass (a lilac root opponent), contrasting effectively with darker lilac foliage.
Peonies and lilacs are cold-weather perennials. Dormancy requires winter temperatures below 40 degrees and they can survive -50 degrees. Peonies are perennial plants with 33 species and many variations. Lilacs and peonies' huge, double pink, red, and white blossoms complement each other.
Spirea cultivars are easy to grow and long-blooming, making them wonderful lilac companions. Spirea blooms with lilacs and repeats later in dwarf and regular sizes. The majority of external branches have pink, white, purple, and red flowers.
Red, orange, yellow, blue, purple, and white columbines are fragile and contrast wonderfully with lilac's massiveness. Remember that lilac leaves fade earlier than other perennials when choosing an underpinning.