Peat, UK, 1975 Pelargonium 'Chew Magna' is in the Regal (Martha Washington Group). The description varies somewhat from that in the International Register. The background of the flower is white initially, but becomes pale pink as it ages. The blotches and veins are described as sienna red, but to me they are a very light red and dark brown with very dark reddish-brown veins. This is a relatively compact plant. The flowers are larger than as is usual with the Regals. The whole plant is very showy when in full flower.