In Susan Solomon wrote:
St. Sw. is a dynamo, an abundant cluster bloom producer that
just keeps going. The plant has thrown out tremendous growth for a
first-year climber, and each growth has branches and nice-sized buds!'

Good to hear. I bought a lonely potted St Swithun this autumn to
replace A Shropshire Lad (an Austin that was spectacularly unsuccessful
for me). It hasn't bloomed yet, so it looks like next spring I may see
the results.