Seed Needs, Double Majorette Hollyhock Mixture (Alcea rosea) 250 Seeds Quality Hollyhock seeds packaged by Seed Needs. Each packet measures 3.25 inches wide by 4.50 inches tall and contains approximately 100 seeds. Double Majorette Mixture will produce colorful plants that grow to a mature height of roughly 30 to 36 inches tall. Hollyhocks are biennial flowering plants which will establish a deep root system the first year of growth. The plants then wilt with the first killing frost, later returning to bloom the following season. Hollyhock plants are often times very tall, Double Majorette however is a much smaller plant, making it perfect for borders, flower beds etc. All Hollyhock seeds sold by Seed Needs are Non-GMO based seed products and are intended for the current & the following growing season. All seeds are produced from open pollinated plants, stored in a temperature controlled facility and constantly moved out due to popularity.