Hardiness: USDA Zone 2a: to -45.5 °C (-50 °F) USDA Zone 2b: to -42.7 °C (-45 °F) USDA Zone 3a: to -39.9 °C (-40 °F) USDA Zone 3b: to -37.2 °C (-35 °F) 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)
Bloom Color: Pink Red Pale Yellow White/Near White
Bloom Time: Mid Summer Late Summer/Early Fall
Other details: This plant is attractive to bees, butterflies and/or birds 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)
Patent Information: Non-patented
Propagation Methods: From seed; direct sow outdoors in fall From seed; winter sow in vented containers, coldframe or unheated greenhouse 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
I'm giving this plant a neutral rating for now because it's taking it's own sweet time when it comes to flowering. I planted hollyhocks last spring in the northwest side of my yard. They did nothing. Three of the six plants didn't make it at all. This winter they've finally started to grow much bigger and it appears they might flower sometime this year. I plan on planting more in a different location to see if they'll do better elsewhere in the yard.
On Nov 20, 2009, desertgardeners from Las Vegas, NV wrote:
This plant has also been grown in Las Vegas, Nevada!
I have a seed grown near white beauty in my back yard. It was late to start blooming, but once it started, it hasn't stopped. It is seeding profusely. Strong winds here might have made the plant unsightly. To avoid that I planted it near a patio cover 4x4 post. The plant is so lovely, it has even been on TV!
On Feb 25, 2006, catcollins from West Friendship, MD (Zone 6b) wrote:
Enjoy these in moderation and do not allow this plant to escape your control. When we moved into this house, the garden lining the driveway was full of hollyhocks that had been allowed to run wild for years. They were lovely and we enjoyed them very much. When we cut them back at the end of the season, we discovered some evergreen shrubs and a hemlock tree that had been completely buried by the hollyhocks. It took us weeks to dig out all the heavy hollyhock roots. Now we allow no more than a couple dozen in our yard and always deadhead to reduce the volunteers.
On Aug 25, 2005, gonedutch from Fairport, NY wrote:
Hollyhocks are just a natural in historic and traditional landscapes. I sowed this biennial near some of the historic structures in our community (see images). They require little care and they bloom for several weeks.
On Mar 7, 2005, wshall from El Paso, TX (Zone 8a) wrote:
These flowers will grow like a weed in the W. Texas/E. New Mexico area. These flowers will thrive with no effort at all, in fact you may want to watch them to ensure they are only growing where you want them. These grow in almost all of my neighbors yards and that is how I obtained seed to grow them. I also bought seeds in a package, but the seeds from the nieighbor's plant germinated faster.
Although I thought my Hollyhocks were beautiful, I had to take them out. They grow very large and take up a lot of room in the garden, but my biggest concern was that they seem to be a favorite of the large and small whitefly, which are a huge problem in Southern California. The fact that there are so many leaves, coupled with the fact that many leaves are located up high out of reach, makes it very difficult to treat for the whitefly. I think this plant may do better in Northern California and elsewhere where the winters are cold enough to kill the whitefly larvae from the previous season.
On Jun 4, 2002, mom2cats from Moorestown, NJ (Zone 7b) wrote:
Once established, these plants grow prolifically.
The seeds need LIGHT in order to germinate so do not cover them with soil, but do keep them moist. They can be started in doors and then later transplanted outside. My only problem with them is that I've planted them in the FRONT of the garden, rather than the back, where they won't hide the shorter plants. I've learned this lesson now! :-)
On Aug 14, 2001, gardendragon from Ladysmith, BC (Zone 8a) wrote:
Biennial hollyhocks can be deadheaded to prompt them to act more like perennials.
Even if you don't want to keep up with removing the maturing seedpods, keep the foliage pruned (remove and destroy the yellowing leaves and those defaced by Japanese beetles and rust. )
Prune severely in late summer, and allow new basal foliage to take over - this foliage may remain semi evergreen with snow cover or in areas with mild winter temperatures.
In the spring, remove the winter-damaged foliage. Taller forms can be pruned back before flowering to create shorter, stockier plants that don't need staking. The blooms will be smaller, but more in scale with the plant size.
This plant has been said to grow in the following regions:
Arley, Alabama Mesa, Arizona Phoenix, Arizona Fayetteville, Arkansas Fremont, California Glen Avon, California Menifee, California Merced, California Richmond, California Sacramento, California Aurora, Colorado Colorado Springs, Colorado Denver, Colorado Fort Lauderdale, Florida Miami, Florida Hawkinsville, Georgia Tennille, Georgia Kalona, Iowa Lacona, Iowa Carlisle, Kentucky Smiths Grove, Kentucky West Friendship, Maryland Ocean Grove, Massachusetts St Cloud, Minnesota Ridgeland, Mississippi Savannah, Missouri Sunburst, Montana Las Vegas, Nevada Auburn, New Hampshire , New Jersey Jersey City, New Jersey Socorro, New Mexico Billington Heights, New York Elba, New York Fairport, New York Pulaski, New York Havelock, North Carolina Lake Toxaway, North Carolina Winston-salem, North Carolina Bolindale, Ohio Fairport Harbor, Ohio Mount Orab, Ohio Williamsburg, Ohio Cedar Valley, Oklahoma Hulbert, Oklahoma Oklahoma City, Oklahoma Bend, Oregon Klamath Falls, Oregon Florence, South Carolina Spartanburg, South Carolina Hendersonville, Tennessee Austin, Texas El Paso, Texas Midland, Texas Camas, Washington East Port Orchard, Washington Spokane, Washington Delavan, Wisconsin