vulgaris (the common lilac) and S. oblata (the early lilac ... A white flowering form named "Betsy Ross" and a pale-blue flowering form named "Old Glory" and have been released through the ...

Betsy Ross', boasting pale cream buds that emerge ... it performs best in traditional cooler lilac-growing regions. The names of all three cultivars were selected as part of a "U.S. Flag" series ...