Alcea, Common Hollyhock, Garden Hollyhock 'Creme De Cassis'

Alcea rosea

Family: Malvaceae (mal-VAY-see-ee) (Info)
Genus: Alcea (al-KEE-uh) (Info)
Species: rosea (RO-zee-uh) (Info)
Cultivar: Creme De Cassis




Water Requirements:

Average Water Needs; Water regularly; do not overwater

Sun Exposure:

Full Sun




Foliage Color:

Unknown - Tell us


4-6 ft. (1.2-1.8 m)


15-18 in. (38-45 cm)


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)

Where to Grow:

Grow outdoors year-round in hardiness zone


Unknown - Tell us

Bloom Color:

Fuchsia (red-purple)

White/Near White

Bloom Characteristics:

This plant is attractive to bees, butterflies and/or birds

Bloom Size:

Unknown - Tell us

Bloom Time:

Mid Summer

Late Summer/Early Fall

Other details:

Unknown - Tell us

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:


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 pods to dry on plant; break open to collect seeds


This plant has been said to grow in the following regions:

Auburn, Alabama

Toney, Alabama

Hesperia, California

Northridge, California

Santa Ana, California

Ruthven, Iowa

Shepherdsville, Kentucky

Smiths Grove, Kentucky

Sandown, New Hampshire

Mount Laurel, New Jersey

Mesquite, New Mexico

Elba, New York

West Winfield, New York

Cleveland, Ohio

Greenwich, Ohio

Knoxville, Tennessee

Belton, Texas

Amelia Court House, Virginia

Buchanan, Virginia

Kalama, Washington

show all

Gardeners' Notes:


On Feb 1, 2018, lathyrusZ4b from Ruthven, IA wrote:

I ordered 3 of these from Bluestone Perennials and planted them out in late May. They bloomed a bit later than the Indian Spring hollyhocks I started under lights (and which were eaten by woodchucks but came back from roots.) First bloomer was mostly white with a burgundy eye, the other two looked more like the catalog photos. All were single to semi-double. Very tall! They hit 7-8 feet and the biggest one defied my attempts to stake it up. No rust on these, no bugs or pests to speak of tho it seemed to be a cool, dry summer here in NW Iowa (my first year here, so don't know what's normal yet.) Bumblebees were all over this plant. Never looked at one that didn't have at least 1-2 bumblebees on the flowers. These weren't as vigorous as my Indian Spring hollyhocks, which put out many mor... read more


On Feb 11, 2008, Dodsky from Smiths Grove, KY (Zone 6b) wrote:

I've grown Creme De Cassis for a few years. I like the flowers, they are quite eye-catching, but the plant overall looks tattered and can be downright ugly from mid-summer onward. Summers in S. Central KY are generally hot and sometimes quite humid, so perhaps it just doesn't like the weather here. lol I planted it towards the back of a flowerbed so the ugly foliage is partially hidden by other nicer looking perennials.

So far no rust problems, but various caterpillars, beetles, and spider mites attack this plant every year. My plant receives full sun from sunup to around noon in its east exposure location, and receives sufficient water from a drip system. It typically gets about 5-6 feet tall and definitely requires staking.

I've enjoyed the flowers des... read more


On Mar 22, 2007, berrygirl from Braselton, GA (Zone 8a) wrote:

Very tall 6-8' - plant 18" apart. zone 3-9. First year blooming, with double, semi-double and singles on the same stem. Deep wine colored blooms with pink fringe.


On Aug 23, 2004, ownedbycats from Southern, NH (Zone 5b) wrote:

I started from seed last year, and it bloomed this year.