I will share what I know about hollyhocks . Here they grow like weeds with no care . Biennial or short lived perennial . They reseed if left alone . My cousin deadheads them and can not grow them . Grandma always always made some seed fall . I can not grow them at the lake . They need more care there . I do not let white grow or at least not reseed . Pink and yellow will throw some white ones . It is like they fade over the generations . So I do not want a patch of all white . Love the yellow . If you live where they are common the alleys in town is where you see them . Country roads also .