Our native and perennial cousin of the Hollyhock, we love Marshmallow for her velvet foliage and humble yet elegant flowers on stately 3- to 6-foot plants with gentle, deeply healing medicinal qualities. Impressively drought-tolerant, marshmallow thrives in moist areas, as well. At Fruition, we sow marshmallow indoors in soil blocks four weeks before final frost, transplanting out after final frost.