HEIRLOOM Huge and luminous, pollinators flock to these gorgeous blooms often towering 6 feet or more, quite a sight as they sway in the breeze. From seed, hollyhocks flower in their second season after growing a stout island of round emerald leaves in year one. And Friends, those silky purple-black petals are an incredible dye as well as edible! We love to press them into frosted cakes alongside borage and bright calendula. Thriving in full as well as part sun, hollyhocks are short-lived perennials, often gracing our gardens five to ten years. Once established, hollyhocks are remarkably drought tolerant and even in gravelly, mediocre soils they shine. Their seeds are so exquisite and easy to save, as well! And we hope that you do ~
When to Sow: 10-12 weeks before last frost cold stratify seeds (put in a moist paper towel in a closed plastic bag in the fridge) for 4-6 weeks, before sowing indoors, 2 seeds per cell or soil block. Thin to 1 after true leaves emerge and harden off before transplanting.
(Alternatively, direct sow seeds as soon as they are ripe in late summer.)
Full/Part Shade: While Hollyhock will thrive in most soils it prefers cool, moist soil in partial or full shade where it will readily self-sow in Zone 4 or warmer
Seed Depth: barely cover (needs light to germinate)
Days to Germination: 7-14 at 65-75°F
Plant spacing after thinning: 18-36 inches
Bloom time: late June – August year 2 and beyond Height: 5-8 feet