Plant hollyhock seeds in your garden to bring a stunning display of colour and height to your outdoor space. Hollyhocks (Alcea rosea) are magnificent, tall biennial or short-lived perennial plants known for their towering spikes adorned with large, showy flowers. With a wide range of colours, including pink, red, white, yellow, and even black, hollyhocks provide a dramatic visual impact wherever they’re grown.
Reaching heights of 6 to 10 feet, hollyhocks are perfect for planting along fences, walls, or as a background for smaller plants in a mixed border. Their towering presence attracts hummingbirds, bees, and butterflies, providing essential support for pollinators and contributing to a healthier ecosystem.
To grow hollyhocks, plant hollyhock seeds in well-draining soil, ideally in a location that receives full sun to partial shade. Sow seeds directly outdoors in late summer to early fall for blooms the following year or in early spring for blooms the year after. Hollyhocks are relatively low-maintenance but may require staking to support their tall stalks, particularly in windy locations.