Hardiness: USDA Zone 4a: to -34.4 °C (-30 °F) USDA Zone 4b: to -31.6 °C (-25 °F) USDA Zone 5a: to -28.8 °C (-20 °F) USDA Zone 5b: to -26.1 °C (-15 °F) USDA Zone 6a: to -23.3 °C (-10 °F) USDA Zone 6b: to -20.5 °C (-5 °F) USDA Zone 7a: to -17.7 °C (0 °F) USDA Zone 7b: to -14.9 °C (5 °F) USDA Zone 8a: to -12.2 °C (10 °F) USDA Zone 8b: to -9.4 °C (15 °F) USDA Zone 9a: to -6.6 °C (20 °F) USDA Zone 9b: to -3.8 °C (25 °F)
Other details: This plant is attractive to bees, butterflies and/or birds Drought-tolerant; suitable for xeriscaping Average Water Needs; Water regularly; do not overwater Self-sows freely; deadhead if you do not want volunteer seedlings next season
Soil pH requirements: 6.1 to 6.5 (mildly acidic) 6.6 to 7.5 (neutral) 7.6 to 7.8 (mildly alkaline)
Propagation Methods: From seed; direct sow outdoors in fall From seed; winter sow in vented containers, coldframe or unheated greenhouse Direct sow as soon as the ground can be worked From seed; sow indoors before last frost From seed; direct sow after last frost
Seed Collecting: Allow seedheads to dry on plants; remove and collect seeds Properly cleaned, seed can be successfully stored
On Aug 30, 2010, sketchkat06 from Lawndale, CA (Zone 10a) wrote:
I though the hibiscus looking flowers on this variety were nice. They needed a bit of staking to stay up, they really wanted to flop over. I started mine indoors in December and it was early enough to tricke them into blooming first year.
Warning for southern California: I had serious trouble with scale infesting my hollyhocks and the rubbing alcohol didn't work to get them off. The plants made it to bloom and seed, but the scale seriously uglified the leaves :/
On Jul 2, 2009, lehua_mc from Portland, OR (Zone 8b) wrote:
This rating could be positive, since its vigor was a major boon to my garden, but Puccinia malvacearum, the hollyhock rust struck, with the "small light reddish brown pustules" on the underside of a variety of leaves, old, young, healthy.
I sowed these in mid April, and three months later, my robust crop was 4' high and about to flower! They got morning shade and intense afternoon heat. Even with the rust I enjoyed one season of the flowers, into November. Come spring however the rust was total and complete, disfiguring what tried to be perennial and requiring total demolition of the area. I am planting native shrubs in that area now, no more risks.
I love this flower, epecially massed together, but I have given up on it because of the continuous fungal problems and slug problems. It self sowed like mad, and I'd find healthy little seedlings popping up, but before they send up blooming stalks they were usually eaten to lace or crusted with rusty spots. I don't have time or energy for plants that need constant coddling to bloom, and unfortunately it looks like hollyhocks are one of those plants in my garden.
I still have the occasional volunteer, though, and when one of those blooms it's always a pleasant surprise.
'Indian Spring' bloomed this summer after being winter sowed. Flowers are large, single blossoms in shades of pale yellow, hot pink, and deep rose; foliage has been remarkably pest-free.
This plant has been said to grow in the following regions:
Capistrano Beach, California Lawndale, California Rockford, Illinois Marietta, Mississippi Blair, Nebraska Elba, New York Spencer, Oklahoma Portland, Oregon Columbia, South Carolina Houston, Texas Tacoma, Washington