Hollyhock creates a spectacular double-petaled flower on 60" stems. Very hardy in the garden and also make a great cut flower with a long vase life.
You can also start these in winter indoors about 8 weeks before your last frost in spring in 4" pots. After your last frost in the spring transplant them into your garden and they will bloom flowers a little later than fall planted hollyhock.
Considered a biennial Hollyhock will only flower for one full growing season. The best way we find to grow hollyhock is to sow these directly in your garden from late summer until at least two weeks before your first frost in early fall. Hollyhocks will not germinate when temps are 60 or below and need several days of temps in the 70s to germinate.
Work enriched garden soil 6" deep and scatter your seeds and then top with a light dusting of compost or peat. One of the biggest mistakes made with hollyhock sowing the seeds too deep as they need light to germinate. The seeds will germinate, develop roots over winter, and flower the following spring and summer. The last picture is a hollyhock that is about 30 days old that was direct seeded in the garden on October 1st here in zone 7.
If you get a late start and want to germinate them in late fall, start them indoors in 4" pots using germination heat mats (or another heat source) to get them to germinate. Once they have their second set of leaves, and are about 2" tall, transplant them into the garden as they send down a tap root and if left in pots will become root bound and not develop correctly.