112-119 days. Summer Carnival Mix hollyhock seeds promise to turn any stale bedding into a sensational and eye-catching garden this season. Summer Carnival Mix seeds grow stunning 48-72 inch tall hollyhocks boasting enormous 4 inch double and semi-double blooms in a mix of yellow, salmon, red, rose, orange, and white. Summer Carnival Mix hollyhock seeds are a spectacular grow in the back of the garden, along a fence, or lining the house. Summer Carnival Mix hollyhock is a hardy annual that thrives as a perennial in optimal gardens, but will easily reseed itself each season for as long as you'll have it around.