Long, pointed red buds open to medium-pink flowers with darker pink backs.

The shrub has a lax, ungainly growth habit and dark green, leathery foliage.

Working with Los Angeles newspaper owner, Manchester Boddy, Lammerts developed a plant research program at Descanso Gardens in La Cañada Flintridge, California.

'Charlotte Armstrong' was used to hybridize twenty child plants, including 'Queen Elizabeth', 'Garden Party', 'Tiffany', and 'Chrysler Imperial'.

'Charlotte Armstrong' won the All-America Rose Selections Award (AARS) and the Portland Gold Medal in 1941.