 | Betsy Ross Lilac. Besty Ross worked hard to make our country's flag and the Lilac that has become her namesake will work just as hard for you! Betsy Ross Lilac (Syringa x oblata 'Betsy Ross') is the first Lilac released by the U.S. National Arboretum's breeding program to introduce disease-tolerant Lilacs perfect for warmer climates. The pure white blooms come on strong and thick, filling your garden with that heavenly Lilac scent. Betsy Ross blooms early in the spring and kicks off the growing season with a bang.... - Betsy Ross Lilac. |