I've been round the garden and allotment to check which of my Sidalceas have survived the winter (though it's more a case of which weren't mortally injured by last summer's floods.
Most of the losses have been of forms of Sidalcea candida and Sidalcea oregana. I've lost completely 'Bianca', 'Rosanna', and 'Rosy Gem', and the majority of plants of 'Party Girl' and 'Purpetta' and lines of candida (ex Ness Botanic Gardens seed list) and oregana (ex RHS seed list). Apart from these, one speciment of 'Oberon' is looking unhappy, and my only specimen of 'Little Princess' is not yet showing any growth.
Plants which has survived include 'Elsie Heugh' (4 plants), 'Rosebud' (2), 'Mrs. Borrodaile' (4), 'Wine Red' (2), 'William Smith' (2), 'Rosaly, 'Sussex Beauty' (2), 'Candy Girl' (2) and an identified variety (mislabelled 'Elsie Heugh' when bought) (44).
Of 40 self-sown seedlings of 'Rosebud' which were transplanted to 13cm pots 39 survived; I also have another 25 in smaller pots. Due to the ill effects of last summer's flooding there was less seed production, but I can still see some seedlings coming up near the parent plants.
If also have seedlings of 'Brilliant' (self-down), 'Jimmy Whittet', 'Mrs. Borrodaile' and 'William Smith' from last year.